R1 may be 10k and R2 100k. The transistor can be the BC548 and instead of the small lamp we can use a series LED with a 1k resistor. D1 is germanium and C1 is 10 nF. C2 can be 47 nF.
This powerful FM transmitter was found in 1992 documentation. The circuit requires a 12 V source...
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If the reader needs to monitor a voltage and does not want an expensive or sophisticated solution. In...