solid state relays

I have four, 5A, 280V solid state relays. They are activated by 3-8V. I need to tie them together so that I end up with a total of 20A. Do I tie them in series, or parallel? Also, do I tie the inputs in series or parallel so that there is one input? Thanks.

Topic by gimmelotsarobots 9 years ago  |  last reply 8 years ago

Will a SSR work with a PWM signal?

Hey guys gotta quick question: I need to be able to cut a PWM signal from a motor for a project. I'm currently using mechanical relays but I'm curious, will a solid state relay work? I know there are easier ways to do this but for right now I'm on a clock and I just want to  know whether a SSR will work for cutting a PWM signal.  Thanks guys!

Topic by HavocRC 2 years ago  |  last reply 2 years ago

solid state relay information Answered

Do I need to apply voltage to pin 5 for it to switch on chip Vishay VO14642AABTR?

Question by jbaker22 6 years ago  |  last reply 6 years ago

Solid State Sensors? (Very Edited)

What properties of an environment can be measured with solid state sensors? Specifically, I am thinking of a project requiring a suite of sensors-on-chips that can measure their immediate (dry) environment and pass the data to a control unit.So far, I know of temperature, magnetism, radiation, acceleration and light (a camera chip).Are there any other (reasonably priced) solid state sensors, and where could I find them (either new, or reclaimed from something else)Edited:OK, so I thought I could be vague about my questions and then surprise everybody with a working satellite.Turns out I'm not so clever as I thought.I'm trying to recreate Sputnik on a tiny budget. Something that could be made by Joe Public, without having to rely on grants or Lottery funding.Sputnik weighed nearly as much as I do, but all it did was measure temperature and pressure, then send beeps that changed if the temperature or pressure went outside a certain range. I know it has been outdone by students with CubeSats, but they still cost tens of thousands of dollars.I thought that it should be possible to recreate (and out-do) Sputnik's capabilities on a single board, a simple programmable control chip taking in the data from a set of sensor-chips encoding it somehow, then passing it to a transmitter to be beamed to Earth.I thought - still thinking micro-budget - that the whole thing could be cased in a short piece of sealed PVC tubing, since PVC is radio-transparent.In my head, in fact, the satellite looks like a relay baton, but shorter.Am I being stupidly optimistic?

Topic by Kiteman 10 years ago  |  last reply 10 years ago

best schematic for a solid state tesla coil? Answered

Can anybody please help me with a sstc schematic? I'm thinking of building a sstc for an exhibition in my school and so i might need to run it for quiet a long time(like for a day with 5min intervals), and so it shouldn't overheat and die. Though I've found some designs especially the steve ward's sstc schematic, the problem is I couldn't get the ucc37322 & ucc37321 gate driver ICs, a suitable and more available substitute would be fine(I live in India). And which mosfet should i use for this purpose, i would be running it at 220v straight from the mains(in a H-bridge confg). And is the following audio modulator going to work with this?

Question by jasshopper 5 years ago  |  last reply 1 year ago

The Long-Term Viability of Solid-State Storage?

The following is a hypothetical (for now...): What Is The Long-Term Viability of Solid-State Storage? So, what does that mean? Well, I am asking about the viability and chances of data or hardware corruption of solid state storage if left in a relatively clean environment for...say...100 years, would it last? More specifically, if it were a boot drive, would it still boot? I am sure some of you will have viable alternatives to solid-state for this purpose I have not considered, which is why I am asking publically. I am trying to ensure the safety of important data over long-term (100+ years) storage and usage. Are there any recommendations/issues or alternatives any of you can think of which would decrease the chances of data loss over such a time?

Question by KyleBriggs 2 years ago  |  last reply 2 years ago

OS on SSD vs OS on HDD

If I decide to build a computer should I put my primary OS on a Solid State Drive? Would this make it more stable/improve performance any? Or should I just stick with a regular hard drive. Thanks for any help.

Topic by Triblade101 10 years ago  |  last reply 10 years ago

What is this component? is it a solid state relay? Answered

I want to know if it is a solid state relay. i got it in an old photocopier matsushita. on the component it is written  sf16drz-h1-4 input    DC4~7v OUTPUT  AC 210V 16A K975c MITSUBISHI Electric it has 4 leads out. 2 small and 2 big. I googled it but no success and if you know explain to me how this component works. it has  a large heatsink on the top

Question by ARJOON 8 years ago  |  last reply 8 years ago

Solid state Tesla coil circuit? Answered

In this SSTC circuit from Uzzors2K I am a bit confused were the 12V and ground actually connect to seeing that this is a AC circuit? Also seeing as the AC is immediately rectified (I think you can do it with a bridge rectifier) is it possible to power it off DC?

Question by The MadScientist 7 years ago  |  last reply 7 years ago

Solid state tesla coil design? Answered

Well, I am planning to build a solid state tesla coil. I've already build a spark gap one, but the amount of control over the output offered by sstcs looks more enticing. I have been looking at many different designs, but I think I want to go with a design based off of Richie Burnett's sstc. Those are the schematcs. The first problem I'm running into is that he is running off UK mains, which are double the voltage from the US mains. Will the output of the tesla coil still be good if I am switching ~120v through the primary as opposed to the ~240v in the drawing? Would this mosfet ( work in the power stage, or should i get a higher voltage/lower current mosfet? I also need a substitute for the mosfet in the logic stage. Does it even need to be a mosfet? Could I replace it with a transistor? The regulation circuit also worries me. Doesn't a linear regulator need to be fed a voltage of at least 2 volts higher than the output in order to function correctly? I just realized how many questions I really had about it. Wow. EDIT: I uploaded the pics for the sstc. The first two are the ones that I linked to, the third is Steve Ward's mini sstc. I was deciding between which one to use, but chose Richie's because Steve's has so many ICs and seems to be over-complicated.

Question by duct tape 7 years ago  |  last reply 7 years ago

where can i buy a NTP12N50 power transistor? Answered

I am building a solid state tesla coil and i cant find the NTP12N50 or NTP12N40 transistors, does anybody know where i can get some? here is the website i am using to build it

Question by Jimmy Proton 8 years ago  |  last reply 8 years ago

Question from a Solid State Tesla Coil?

I have a PLL SSTC. I use IRFP460 Half-bridge. Can I use other MOSFET?. Or how to choose a MOSFET for SSTC

Question by james34602 6 years ago  |  last reply 6 years ago

i was on gizmodo the otherday

And saw this kool samsung 256gb solid state drive, its suppost to be the smallest, fastest, and largest space SSD, thats pretty kool, but, $4k is a little steep for me. especially if it costs more than 2 of my new laptops.

Topic by Yerboogieman 10 years ago  |  last reply 10 years ago

SSTC Trouble Shooting?

I am in the prosses of building steve wards Class E SSTC( )and copyed the secondary from here: ( ), i have it all set out i am am using all the componants he does only mine does not work(not that I expected it to work!). i do not have acsess to a osiliscope nly a multi meter with the Hz function so i can not look at the wave forms it the Gate/ anntenna. Any help would be much appresiated as i have not really worked with tesla coils/ resonance before.

Question by MadScientist101 7 years ago  |  last reply 7 years ago

Is it possible to use an SCR to make a small solid state tesla coil? Answered

From what I understand, an SCR is like a diode that can either be turned on to act like an everyday diode, and it will only turn back off when the power is cut. With this understanding, will this circuit work? if not, can you explain? even if it doesn't work as a tesla coil, will it work as a fence charger (with a trigger transformer or ignition coil?)

Question by -max- 6 years ago  |  last reply 6 years ago

Is it possible to convert a solid state amp to a tube amp?

 Is it possible to convert a solid state amp to a tube amp?

Question by adamgillies 9 years ago  |  last reply 8 years ago

Is there any solid that melts at a lower temp?

 Matter can change states. Most solids need an increase in temperature to melt. Is there a solid that can melt at a lower temperature.

Question by joyce kane 9 years ago  |  last reply 9 years ago

Can a solid state amplifier be reconstructed/reconfigured as a tube amp?

All guitarists seem to prefer the sound of a tube amp over solid state. Amp manufacturers, after committing to the solid state format, hook, line, and heat sinker, must have been appalled when guitarists began to demand availability of the old school tube amps, and scrambled to replicate the distinctive tube sound by means of additional effects and eventually modelling features. But, the big boys doggedly refused to admit the error of their ways, which, as it turns out, was a good thing as new amp manufacturers began to spring up to fill the void. Finally after sitting around their boardrooms, no doubt sipping their Coke new recipes while watching their market shares dwindle, they decided to reissue some of their most popular tube six times the initial price of course. I can't afford a new tube amp. I can't afford a used tube amp. Ebay and craigslist are rife with inexpensive, (relatively), solid state amps. My question then is, could a solid state amp be retrofitted with a tube chassis and perhaps still utilize some of the solid state attributes and parts? My instinct tells me yes. However, my knowledge of electronics and theory being nil, I really haven't the foggiest idea of what might be involved with such an undertaking. To say that a schematic is Greek to me is a gross understatement. Therefore, I appeal to the genius of the Instructable contributers to comment, or even better, start a project build. (C'mon gmoon, you know you want to!) Thanks Sycan

Topic by Sycan 9 years ago  |  last reply 8 years ago

My solid-state relay keeps blinking a lightbulb while in the inactive state, how can I eliminate that?

I have a DC controlling AC solid state relay connected to an arduino diode for control and a light  bulb to the 220 side. While there is no signal coming from the arduino the bulb is blinking insanely fast, when there is arduino signal, the light remains constantly on as intended. How can i make sure there is no load at all on the 220 end while the relay is inactive, so there is no light flickering? Relay specifications: Control: 3/32VDC Output: 48-480VAC 50/60Hz Thanks in advance!

Question by TenshiKiri 7 years ago  |  last reply 7 years ago

how can i hook a keyboard to a solid state tesla coil?

I want to build a solid state tesla coil and hook a keyboard up to it. how can i do this?

Question by rebel01 9 years ago  |  last reply 9 years ago

SSTC using microwave oven inverter?

I recently obtained a microwave oven inverter and I've been doing a lot of research trying to figure out how to power it. The microwave I found came with schematics and a decoder for the button membrane so I am able to operate the main control board and the MICOM board outside of the unit (with slight modifications) but I have yet to test the inverter in fear of blowing it up. Currently my question is can I build a 555 PWM to cheat the CPU or bypass it completely? if not then I suppose I could use the microwaves original circuitry to do so but I'd like to build a nice solid state tesla coil with it if possible.  Instructables is being retarded and wont let me add notes to my pictures  image one - Main control board to the left, MICOM control board in the middle, Iverter on the right image two - Slight modifications to power the board outside of the microwave image three - Used decoding chart to operate main circuit without button assembly image four and five - Showing the output of the MICOM board going to the CPU on the inverter and settings of Oscope (channel A)

Question by Jimmy Proton 4 years ago  |  last reply 4 years ago

I need to scavenge some solid state relays. 5v 120vac. What types of things have these in them?

I am trying to power some Christmas lights with my computer speakers and need some solid state relays to switch them. I tried the reed type from radio shack but they keep sticking. I have lots of random electronics laying around to scavenge from, any suggestions would be greatly appreciated

Question by Deathstick 8 years ago  |  last reply 7 years ago

Can you dim a lamp with an arduino module and a solid state relay?

I bought a Crydom D2425 Solid State Relay 240 Vac 25 Amp relay and I've been able to use it in tandum with my arduino uno to turn on and off a desk lamp so far. I've been reading up on pulse width modulation and was wondering if it was possible to control the lamps light level (something more than just on and off) with it. All help is greatly appreciated.

Question by fdsafdsaqwrewqrbsafdsagrgew 6 years ago  |  last reply 5 years ago

Can I replace MOSFET with IGBT in Solid State Tesla Coil?

I have a half-bridge circuit. It using IRFP460. But I want turn this driver to high power version. So I request some help! Can I use IGBT for half-bridge circuit?

Question by james34602 6 years ago  |  last reply 5 years ago

is the output from a solid state relay dependant on the input voltage or current?

Can someone please explain how a SSR works i understand the basics, the led and the photo-diode but im not 100% sure how to use one. im thinking i want to control a large 12v motor that draws a high current (~50A) using the guts of a RC car remote, but i want to maintain the analog signal( if that makes sense...) i dont want it to be on or off, i want to be able to power incrementally. i thought that a SSR would be the right thing for the job.

Question by grimgroper 9 years ago  |  last reply 9 years ago

How to make a solid state FET Amplifier, 600 watts output, continuous 1.5-22MHz cov. swr protected, thanks Mike,,KJ4ITH?

Would like to have a nice solid state amp, but the cost is out of my range, anyone know how to put one togather, and at a savings...they run about $1500. thanks, Mike,,,KJ4ITH

Question by mikie1946 8 years ago  |  last reply 8 years ago

How do I build a Solid State guitar amplifier with 15-30 or more watts?

I've heard about the popular gainclone amps and seen a few, but none of them were for guitar it seemed. I'm looking for anything- guides, schematics, etc.- to help me build a solid state guitar amplifier. I would like for it to have at least 15 watts. Anything goes. Thanks in advance!

Question by snowpenguin 9 years ago  |  last reply 9 years ago

Is there a specific waveform that needs to be produced by the driver electronics in a solid state tesla coil?

Is there a specific waveform (for example sine, square, sawtooth, ramp, etc) that the driver electronics (an oscillator i think?) in a solid state tesla coil in order to properly drive the coil?

Question by UbuntuNinja 9 years ago  |  last reply 9 years ago

Are tube type amps really better than solid state type amps? Answered

A question below reminded me of this. My friend and neighbor plays a guitar and has been going on about how great his new Fender tube amp is and how much better it sounds than the solid state amp he previously used. Truthfully, I've listened to him play on both (he's no Chet Atkins for sure) and I can't discern much, if any difference. I've done a little research and heard words like, "warmer,"  "more vibrant" and "louder" used to describe the difference. With the exception of louder, most of these descriptions are not actually measurable. Is there a way to definitively say tubes are better, or is it just a subjective quality that depends upon the ear of the listener?

Question by Burf 8 years ago  |  last reply 5 years ago

What's the best way to create a Linux server from solid state memory ? Answered

I have a dead home server. It used two hard-disks, one for everything but /home and one for /home. /home is fine, as it was intended to be. I'm about to rebuild it, but its occurred to me that virtually all of my data in there, apart from less than a gig is pretty well static - its the house email server, so there is a dynamic bit in there, but its tiny. What's the best way to do this ? I've Googled a bit, but not found much guidance, except folks selling solid state servers. The motherboard is a mini-ITX. What about using Mint as the basis of something ? Steve

Question by steveastrouk 8 years ago  |  last reply 7 years ago

Does solid state relay needs a protecting diode for the pin 3 out of a 555 monostable? Answered

Recently i need some timer for my capacitor charger to be used in a coilgun. i just finished a 555 one shot monostable pcb design.  my charger require about 24 watt of power which is unsufficient for the 555 pin 3 out,. I know that a protecting diode can be put with a relay. but a solid state for a solid state realay. does it need a diode. i just want to know because i will put it in my design 

Question by ARJOON 8 years ago  |  last reply 1 year ago

Anyone know any good online guides to solid state, stereo, amp modding for beginners?

I have an old Pioneer amp with a dying right channel that I would like to try out fixing/modding on. Can anyone suggest online resources for a beginner wishing to learn?

Question by unpredictableTP 9 years ago  |  last reply 9 years ago

Any ways to block the EM waves from my solid state Tesla coil?

Hi guys, I'm working on a small solid state Tesla coil (Slayer exciter) and every time I test it, the internet router stops working and peoples don't really appreciate it when it happens. The router is about 25-40 feet away but my brother's computer is in the same room about 10 feet away but is connected with an Ethernet cable that might act as an antenna? I know that all the touch lamps in the house goes crazy so I really need to find a way to stop the EM waves to interfere with the electronics in the house. I thought about putting the coil in a earth grounded metal cage but have no idea if it would work and if there is any other ways to do it. Any help?

Topic by Electrospark 4 years ago  |  last reply 4 years ago

How do I program an Arduino to be used as an interrupter in a Solid State Tesla Coil?

I want to use an Arduino as the interrupter in my Dual Resonant Solid State Tesla Coil but I do not know how to program in Arduino (or any other programming language for that matter).  The rest of my gate driver (i am using an IGBT full bridge) is a 555 timer with equal on/off time generating pulses at the resonant frequency of the coil.  The output is split into 2 parts, 1 being the direct output from the 555 and the other being the output of the 555 connected to an inverter gate.  From there both inputs are fed into MOSFETs (or some other type of transistor, I just had some switching MOSFETs laying around) that have their gates controlled by the interrupter.  I want the Arduino to take the pulse from the 555, read its frequency with pulseIn, and then read a variable resistor on the analog pins whose value will be used as the duty cycle of the pulse generated by the interrupter expressed as a percentage.  The drains of the MOSFETs will then be connected to the gates of the IGBTs that will switch 900 volts from an inverter based around a transformer from a disposible camera flash board through the primary coil.  This is the last part of my driver and then I can build the coil and post the instructable for everyone to enjoy (hopefully, i am always open to constructive criticism).

Question by UbuntuNinja 9 years ago  |  last reply 8 years ago

How do I determine the primary turns needed for this PLL solid state Tesla coil? Answered

I have nearly completed my SSTC but I am unsure how many primary turns are needed, is it just an educated guess, or is it calculated? There are no specifics on this on the website

Question by The MadScientist 7 years ago  |  last reply 7 years ago

Transistor relay with NO and NC?

Does anyone know how to make a solid state relay with a NO contact and a NC?Does anyone have a schematic?Thanks.

Topic by thermoelectric 10 years ago  |  last reply 9 years ago

Compressor-free refrigerator may loom in the future

. From Compressor-free refrigerator may loom in the future at Penn State Engineering via Slashdot:University Park, Pa. - Refrigerators and other cooling devices may one day lose their compressors and coils of piping and become solid state, according to Penn State researchers who are investigating electrically induced heat effects of some ferroelectric polymers."This is the first step in the development of an electric field refrigeration unit," says Qiming Zhang, distinguished professor of electrical engineering. "For the future, we can envision a flat panel refrigerator. No more coils, no more compressors, just solid polymer with appropriate heat exchangers."

Topic by NachoMahma 10 years ago  |  last reply 10 years ago

High voltage DC voltage doubler? Answered

Is there any kind of high voltage voltage doubler that uses pulsed DC? (Solid state not anything like a Marx)

Question by The MadScientist 8 years ago  |  last reply 6 years ago

High Frequency Alternators

Look at a picture of some arcs from a common spark-gap Tesla Coil, and then compare it to the arcs from a solid-state. What makes the two so different? The difference comes from the Solid-State Tesla Coil to operate in CW (constant wave) mode. This means that its power supply is uninterrupted, whereas in a spark-gap type, power is being switched on and off hundreds of times per second. If the output terminal of a CW coil doesn't have a brake out point, no corona or spark will occur. For anyone who's investigating wireless power transmission or Tesla's version of radio, this is a very helpful feature, since corona only wastes energy. And if it does have a brake out point, it can create some pretty interesting spark displays, as I mentioned above. An arc to a grounded object increases the current in the arc to such a point that it turns into a white-hot "flaming" discharge. All-in-all, a CW type coil is a pretty interesting kind to observe. But solid-states can be pretty difficult and annoying to build, and expensive as well. Since solid-state technology obviously was not available to Tesla, he found a different way to operate his coils in CW mode- a generator that was specially designed to produce radio-frequency power. He had originally created it for high-frequency arc lighting. Today, I have seen absolutely no coils run by a high frequency alternator. Of course, an alternator would be admittedly difficult to build, but since it could probably deliver more power than a solid-state coil, it would be worth it. Does anyone know if there are any companies that still make these alternators? Would anyone be interested in recreating it? Should we even bother? Thank you for listening. Peace!

Topic by ElectricUmbrella 9 years ago  |  last reply 4 years ago

Buy Radios, Amps and Repeaters , Icom IC-PW1 Linear amplifier, HF+6m 1kW solid-state

Contact me if you are interested in any of the rigs listed. Amps and Repeaters , Icom IC-PW1 Linear amplifier, HF+6m 1kW solid-state Kenwood TS 2000 Kenwood TS 990s Elecraft K3 Elecraft KX-3 FlexRadio 5000a FlexRadio 6300 Icom IC 7800 Icom IC 756 Pro III Icom IC 7000 Acom 2000a Icom PW-1 Email Pictures and price available on request. (73)

Topic by BECKONX 3 years ago  |  last reply 3 years ago

tesla coil help

I need help with my solid state tesla coil. i need links to a free sample of either FQP17N40 or ntp12n50 or 2SK3068 as well as the ultra fast diode MUR1560 i appreciate your help

Topic by tech-king 10 years ago  |  last reply 10 years ago

possibility of Wave Change?

This theory states (my own be exact) that a certain wavelength can become an amorphous solid using a certain gas, a friend of mine agreed with me. What is your opinion on this matter?

Topic by crc09 9 years ago  |  last reply 9 years ago

Help out with a Solid relays idea and make it an Integrated Circuit design?

Hello,  I have been tinkering with the idea of being able to press 4 buttons in a or any sequence and have a set of LEDs light up showing which button was pressed first, second, third and so on. I was able to do this with plenty of solid state relays (kinda like a 4x4 matrix of relays) and four switches I can turn on various LEDs (1 thru 4 for each button) in each row to signal which button was 1st, 2nd, 3rd or 4th. But what I would really like to figure out next would be to this same thing but with an IC or some kind of micro controller but I have no idea where to begin because most of my research to do this so far has taken me nowhere...people have lots of ideas on the Game show type buttons and lights deal but not for what I am doing. Game show just shows and locks 1 button and like and I need to be able to make connection between which button was pressed in what order.  Any help or further direction would be great.

Topic by netgoo2000 4 years ago  |  last reply 4 years ago

AC Power Phase Control?

Hello, Can we use AC phase power control Solid State Relay to control the speed of single phase Induction motor, Using PWM as input to the Relay and the output of relay connected to Induction motor, The motor runs at 220v AC,50Hz,55Watt.

Question by KaroonjharN 3 years ago  |  last reply 3 years ago

montreal area coilers

Okay guys, good news: ive started the Montreal area tesla coil club. if you live in the Montreal area and want to join, please say so. our first project is a low power solid state tesla coil. pm me to join!

Topic by tech-king 10 years ago  |  last reply 3 years ago

PINB register on ATtiny45 not working? Answered

I've been programming a pretty simple led driver in Atmel Studio 6 with the attiny45. The idea is that hitting a push button will advance through three different modes of the LEDs, solid, strobe, and fade. When you reach the last mode hitting the button again should reset to the first mode. For some reason the PINB register doesn't seem to be working. Here is the code: #define F_CPU 1000000 #include #include int main(void) { //  Setup PWM TCCR0A |= (1 << COM0A1) | (1 << WGM00) | (1 << WGM01); TCCR0B |= (1 << CS01); DDRB |= (1 << PB0)|(0< PORTB = 0b00010000;   //enable internal pull up int state = 2;  //initialize some variables while(1) {   //int val = PINB3;       if(PINB == 0)   //if button is pressed, increment state variable   {    _delay_ms(100);   //primitive debouncing...     state = state + 1;   }       if(state > 2){  //if we exceed the number of modes, reset state variable       state = 0;   }else   {    state = state;  //probably not necessary, but has solved problems in the past.   } while(state == 0){   //first mode just turns on LEDs at full brightness     OCR0A = 255; } while(state == 1){  //second mode strobes the LEDs     OCR0A = 255;   _delay_ms(35);   OCR0A = 0;   _delay_ms(35); } while(state == 2){    //Third mode fades LEDs      //  Fade LED on    for(i = 0; i < 255; i++)    {     //  Load new value onto OCR0A register to change duty cycle     OCR0A = i;     _delay_ms(5);    }       //  Fade LED off    for(i = 255; i >= 0; i--)    {     OCR0A = i;     _delay_ms(5);    } } } } All of the independent modes work fine, and even the state variable itself is doing what it is supposed to (I know because initializing it to different values gets me the correct mode) but for some reason the PINB register is not getting any kind of response. I am enabling the internal pull up, and then the button connects the I/0 (in this case PB4) to ground which should make the state zero and satisfy the argument of the if statement, but for some reason this is not doing anything. Any ideas? thanks in advanced!

Question by Higgs Boson 5 years ago  |  last reply 5 years ago

SSR and a hotplate

Dumb question. Have a heating plate that uses 1100 watts and runs on 120 volts ac. if 1100 watss / 120 volts = more or less 10amps, Could I safely use a 10 amp rated ssr aka solid state relay or use something higher.

Topic by Computothought 3 years ago  |  last reply 3 years ago

A Question about transformer? Answered

In transformer formula , the primary turns and secondary turns affect the voltage and current directly. Why some transformer output voltage is affect by frequency and core type , just like Flyback Transformer(LOPT) and Tesla Coil specifically is Solid State Tesla Coil?

Question by james34602 6 years ago  |  last reply 6 years ago

need relay help

Hi all, me and a friend are working on project and i'm trying to figure out how to make a solid state relay out of a night-light. the problem is that the light turns on when the photo sensor fails to sense light. i would much rather the light would activate when the sensor detects light. any ideas?

Topic by synthetic_iron_oxide 12 years ago  |  last reply 12 years ago

How to drive a mini tesla? Answered

i wanted to be able to drive this tesla via a solid state circuit but don't know where to start. i don't need audio mod or bigg sparks just to make it work. bearing in mind i am 13 don't make it to complicated thanks. :)  

Question by MadScientist101 8 years ago  |  last reply 8 years ago