This 1950s audio amplifier uses output tubes of type 1625 in its output stage. The Class B circuit provides a few watts of power and uses transformers that are not readily available today.
We found this circuit in a Radio Electronics magazine from January 1975. The transistors are...
This circuit is from a 2001 Poptronics. The magazine no longer exists, but the components used are...
Found on an Elektor from the 90s, this TTL circuit generates a predetermined number of pulses with a...