Found in American documentation from the 90s, this circuit uses a high voltage relay and has no grid isolation. The high values of R1 and R2 prevent the shock when it touches the sensors.
This grid dip meter was found in old American documentation. The range is from 350 kHz to 1700...
This astable NAND TTL provides complementary signals. The circuit must be powered with 5 V and...
This is a slightly different configuration of full-wave power control than we found in an old...