Description The power amplifier boosts 88-108MHZ 1-2W FM transmitter's power to 15 W. It includes multi-level low pass filter and ...

Description This one is a high power long range (use yagi antenna)  FM Transmitter  that provides very good frequency stability in about 1k...

The RF oscillator using the inverter N2 and 10.7Mhz ceramic filter is driving the parallel combination of N4 to N6 through N3. Since t...

     In the earlier post, we have studied about Simple fm radio jammer and its applications. Now, let us learn about one more interesting ...

This metal detector is a low sensitive type  can be powered by a battery 3 to 15V, and may be constructed employing four exclusive OR gat...

Low cost fire alarm circuit. Description. W hen there is a fire breakout in the room the temperature increases. This ...