This excellent tube preamplifier was found in Radio Electronics magazine from July 1958. The power supply was not included. The circuit has several inputs.
This static switch or electronic contactor was found in a 1968 Motorola publication. The triac...
This circuit allows you to read resistors up to 20 M ohms, converting it into voltage. The circuit is...
This circuit measures the power of a transmitter being sandwiched between the antenna output and the...