This circuit is from an article about operations in a Radio Electronics magazine from around 1968. The transistors are types of the time and the power is not the greatest.
Found in an American documentation from the 90s, this circuit works as a receiver for a data...
This experimental amplifier was found in the 1960 Mullard transistor reference manual. The...
This circuit makes use of an uncommon TTL component today, but it can be implemented with...