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Building a super spy bug transmitter video tutorial

A very small home made FM transmitter Bug using a single transistor and with a transmission range of 200 meters. This FM transmitter Bug is very easy to build. The size of the circuit board is ONLY 22mm x 10mm.

To make the PCB, using the toner transfer
method and Ferric Chloride.

Schematic
schema-fm transmitter

PCB
Building a super spy bug transmitter video tutorial

Parts used Building a super spy bug transmitter video tutorial

Home made PCB
2n3904 transistor
4.7p ceramic capacitor
1n ceramic capacitor
22n ceramic capacitor
1 – 5p to 30p air trimmer
360R resistor
4.7K resistor
10mm Mic
35cm antenna
Battery Plug
Some solder
19mm heatshrink

thanks for talkingelectronics.com

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Circuit power amplifier IC TDA7294 with PCB – 80 W RMS

Project of circuit potent audio amplifier with TDA7294 Super Amplifier with tda7294 of the St microeletronics, is possible to get potency of up to 100W … Read more