With Instructables you can share what you make with the world, and tap into an ever-growing community of creative experts.
Tell us about yourself!
DIY Arduino based Mini CNC machine new Design
The Tic Tac Adjustable Power Supply
Thanks for the fast replying I really appreciate it ...I already did what you suggested about trying different values ,because I thought from the first sight 10kR might be too much , then when I made it , the LED emitting was dim . so after some time I figured the optimum value for that resistor was 1k . more than 1k will cause dimming of the LED, lower than 470R will cause LED flickering or Fail of LED Emitting with some transistors , dont know why acully anyway the project was handy and fun to make, so here is my last version of it with SMD componentsand thanks again for the link , helped alot.
how to make a very simple NPN transistor tester
Thanks , I've been looking for this circuit for long time , I just started the Hobby so I hope u don't mind, Can you explain to me why we used this values of the resistors at those specific locations Thanks Again
Know Your IC: 555 Timers
Zener Diode Checker
DIY 9V Battery Clip
High efficiency regulated Joule thief
Inductance/Capacitance Meter Saga
How to Write a Good Electronics Instructable
Joule Thief Low Voltage Battery Charger
Short circuit protection for (almost) any power supply
Build Your Own Logic Probe on the Cheap Using a 555 Timer!
Battery Powered Power Supply, Selectable Voltage
Introduction to the 555 timer
Mini Decibels - a simple volume meter with an electret mic & LM3916
Knight Rider LED Flasher - NE555 & CD4017
How to make an Universal DC Motor Speed Controller
DIY | Adjustable Timer using 555 & potentiometer
Heatless (cold) Toner Transfer for PCB making
0 - 12 V LM317 Power Supply
Arduino 101 Fundamentals
Component Tester - Test almost anything !!
PCB mockup prototype in cardboard
Simple Bi-directional Switch
ty , Helped alot
How to use a potentiometer as a voltage divider.
How To Make Soldering Station
HOW TO MAKE A MODED GLUE GUN / Tutorial / DIY
Bluetooth PS2 Controller
Easy LED Tester
DIY Lithium-ion battery charger
Coke Top Volume Control
Breadboard Friendly Tactile Switches
Join 2 million + to receive instant DIY inspiration in your inbox.
© 2016 Autodesk, Inc.