This 1 to 40 MHz amplifier is from a 1969 Motorola documentation. The components are of the time but admit modern equivalents.
Found in documentation from the 1980s, this circuit can be used with other operational ones. The...
This circuit warns you if you forget to turn off the car light and leave it. The circuit is from a...
We find this efficient emergency lighting system in a 1987 publication. The circuit keeps a...