voltage controlled switch - Electronic Circuits Projects Diagrams Free

pearlmaster8 · 2nd April 2006, 04:54 PM

okay, this should be really simple but i cannot seem to find an easy cheap solution. basically i have a microphone signal as one input, an output of a comparator as another input and a reset switch.

in normal conditions the microphone signal should just go directly to the output, if the voltage from the comparator goes high, i want the output to be grounded. and then once a reset switch is pressed the microphone signal can again pass.

any ideas?

thanks in advance.

-ravi vasudevan

Roff · 2nd April 2006, 07:01 PM

Quote:

Originally Posted by pearlmaster8

okay, this should be really simple but i cannot seem to find an easy cheap solution. basically i have a microphone signal as one input, an output of a comparator as another input and a reset switch.

in normal conditions the microphone signal should just go directly to the output, if the voltage from the comparator goes high, i want the output to be grounded. and then once a reset switch is pressed the microphone signal can again pass.

any ideas?

thanks in advance.

-ravi vasudevan

What supply voltage do you have available?

Dr.EM · 2nd April 2006, 07:03 PM

Sounds like you'll want an S/R latch followed by a relay (driven by a transistor). Though grouding the singal directly might not be too good.

Russlk · 2nd April 2006, 10:50 PM

Why do you want to ground the microphone? Why not open the circuit?

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2nd April 2006, 04:54 PM	(permalink)
pearlmaster8	voltage controlled switch okay, this should be really simple but i cannot seem to find an easy cheap solution. basically i have a microphone signal as one input, an output of a comparator as another input and a reset switch. in normal conditions the microphone signal should just go directly to the output, if the voltage from the comparator goes high, i want the output to be grounded. and then once a reset switch is pressed the microphone signal can again pass. any ideas? thanks in advance. -ravi vasudevan

2nd April 2006, 07:03 PM	(permalink)
Dr.EM	Sounds like you'll want an S/R latch followed by a relay (driven by a transistor). Though grouding the singal directly might not be too good. __________________ Angry!? I'm absolutely electrolytic! Will have to make do with myspace now I guess...

2nd April 2006, 10:50 PM	(permalink)
Russlk	Why do you want to ground the microphone? Why not open the circuit? __________________ see my website: www.geocities.com/russlk