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can we use any ic as a switch if yes then how ? Answered

i want switching witha ic

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15 Replies

user
iceng (author)2015-12-26

You can use these IC as switches and control DC, AC as shown.

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iceng (author)iceng2015-12-31

Hope u understand a micro or some kind of sensor replaces the push switch...

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Soumojit (author)2015-12-31

You can use a transistor . A transistor works like a switch. or you can also use amplifier ic .

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user
Downunder35m (author)2015-12-26

Sometimes I am amased how much you guys post as a resonse with nothing to go at LOL

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iceng (author)Downunder35m2015-12-26

It's a gift....

The Irish are born with it, I believe...

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user
rickharris (author)iceng2015-12-27

All this time and I never knew you had Irish blood!

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iceng (author)rickharris2015-12-27

Well yes, I cut my hand rock climbing on Inishmore a delightful Aran island.

I voiced a desire to see a green Leprechaun and promptly stumbled and fell to the ground. My face 10 cm from a large brilliant green beetle...

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rickharris (author)iceng2015-12-28

Welcome to the finest race on Planet Earth (my wife is Irish) so I have to say that.

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Josehf Murchison (author)iceng2015-12-27

We have the same beetle here in Canada it is called the Emerald Mortician. It lays it's eggs in rotting corpses.

Another name for it is a cadaver beetle, there are a number of cadaver beetles sometimes called undertaker beetles, and some even bury small rodents and birds when they lay their eggs.

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seandogue (author)2015-12-28

yes, by designing a circuit to use them. There are many choices.

Vague question => vague answer

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Josehf Murchison (author)2015-12-27

I know this is not going to be of little help, but yes and no.

All logic ICs are switches, a OPamp is an IC and depending on how you wire it rail to rail it can act like a switch.

However you are asking for circuits that number in the millions.

So what IC do you want to use?

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user
Yonatan24 (author)2015-12-27

Do you mean to use it as a relay?

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user
milcarlsandoval (author)2015-12-26

i suggest you use a switching transistor or MOSFET...its a far easy to use and cheap too..it can also handle range of voltages and currents

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-max- (author)2015-12-26

If you just trying to control power to something small, most any transistor will do the job, but if you want to switch an analog signal to something, a FET, analog switch, MUX, or in some cases, a relay is needed.

MOSFETs can be used in some cases for passing or isolating signals since they sorta-kinda act like electrically variable resistors, but realistically they have a few serious limitations because of the body diode and stuff for passing signals between the source and drain. I have a few TL601 and TL604 chips, which are quite nice but have a pretty high ON resistance.

For strictly AC signals, even simple DIODES can be used! You just capacitively couple the signal to the diode, so it looks like

-----| |----->|------| |------

and by applying a DC offset voltage to the diode, you can control the AC signal. W2AEW has a good video about this.

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steveastrouk (author)2015-12-26

You usually use a transistor as a solidstate switch. If you're switching AC, you can use a thyristor or triac.

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