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Sound Operated / Sound
Activated Circuits, Page 3
#'s - P Q
- T U - Z
Last Updated on:
Wednesday, December 20, 2017 05:05 AM |
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Links to electronic circuits, electronic schematics, designs for engineers, hobbyists,
students & inventors: |
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Ultrasonic Dog Whistle - A novel supply voltage monitor which uses
a LED to show the status of a power supply. [by Miroslav Adzic - Serbia &
Montenegro] |
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Voice activated switch - The VS-1 provides quality components and
a compact printed circuit board that makes it a snap to “turn on” a
multitude of devices, from HAM transmitters and amps to tape recorders or
clandestine listening equipment....HAVE FUN!....(electronic design added
6/07) |
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Voice Record/ Playback Circuit - The ISD1000A is a Direct Analog
Storage device which allows you to store 20 seconds worth of voice
data on an IC chip which can be play backed anytime. The data stored will
stay in memory even if the power is removed. To use the circuit below simple
apply power to the circuit, press the record button and hold. Speak clearly
into the microphone. You have up to 20 seconds…. [Randy Linscott's website] |
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Wave Multiplier for music Synthesizers - (electronic circuit added
4/05) |
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Weird Sound Generator - (electronic circuit added 08/08/08) |
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Whistle on Whistle Off - This CMOS toggle flip flop circuit has an addition
of2bandpass filters and condenser microphone so the relay can be toggled by whistling
at it…. [Bill Bowden's website] |
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[_OLD-ads-dont_upload/OLD I-ADS from web/ad-djandassoc.htm] |
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Whistle Responder - Beeps when hears your whistle A gadget suitable for
key-holders, games etc..... |
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Whistle Switch - (electronic schematic / circuit added 4/02) |
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Whistler: Electronic Trainer/Coach - This device makes it possible to
generate beeps at chosen regular time intervals for timing track race training. Each
time interval is indicated by a beep, and the end of a performance test is indicated
by a double beep. Two types of test are allowed.….must register on this site....
[Published in Elecktor July/August 2010] |
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Sound Operated / Sound
Activated Circuits: #'s - P
Q - T
U - Z |
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