This FM transmitter circuit uses four radio frequency stages: a VHF oscillator built around transistor BF494 (T1), a preamplifier built around transistor BF200 (T2), a driver built around transistor ...
If you wanted to know how to make long range FM transmitter, here’s a way to do that. For this project, you need solid gauge wire, electret microphone, a copper clad PCB, a transistor, and capacitors.
Most of the IR remotes work reliably within a range of 5 metres. The circuit complexity increases if you design the IR transmitter for reliable operation over a longer range, say, 10 metres. To double ...
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