This is the receiver for the previous circuit found in the November 1991 Radio Electronics magazine. The frequency is 2.2 MHz determined by the coils.
This bipolar reference of temperature compensated voltage was found in an old documentation on...
The oscillator shown in the figure uses two NAND ports of the four existing in an integrated TTL...
This inverter circuit with transistors provides a voltage of 300 V from a 12 V supply. The...