This circuit is from Mullard documentation from 1969. Transistors support current equivalents. Output transistors must be mounted on heat sinks.
Found in a 1968 US publication, this circuit is designed to measure very weak signals. The...
This simple circuit is designed to charger AA or AAA Nicad batteries. Current can be changed...
This circuit was found in a 1980s US publication. There may be some difficulty in obtaining the...