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Wednesday, October 22, 2014

HiFi Headphone amplifier

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Whistle to beep circuit

This simple schema produces a beeping sound that lasts for around 3 seconds whenever you make a whistle. The CMOS Hex inverter CD4049 is the...
GSM Cell Phone Jammer Circuit

GSM Cell Phone Jammer Circuit A admirable diy gsm jammer or cellular adaptable buzz jammer schematic diagram for use alone in GSM1900 with a...
Voice Scrambler

With this circuit you can modify how your voice sounds by changing the pitch of your voice. This circuit can be connected to a phone and wit...
Simple Siren Circuit

This schema will generate siren sound when S1 pressed and increate sound frequency becuase capacitor C1 charged when switch S1 released the...
Preamplifier Microphone with 2 Transistor

Microphone preamplifier or often known as mic preamp can be made use simplemicrophone preamplifier circuit as follows. 2 microphone preampli...