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.
The sensor in this circuit is a BA315 diode. Other diodes can be experimented, but this is one...
The figure shows how to implement the AND function with a Norton LM3900 operational amplifier. The number of...
A single high-power transistor MJ15003 is used in the circuit in the figure to generate strong...