This two-transistor circuit was found in the August 1972 issue of Radio Electronics magazine. The coil is a common IF transformer for transistor radios. The signal generated is rich in harmonics.
For an operation with extremely low consumption, generating an audio tone, we can use the circuit of...
Using a 741 operational this circuit was found in the August 1993 Electronics Now magazine. The...
This circuit measures the RF power of oscillators and small transmitters in the range of 0.05 to...