This circuit was found in a 1967 Delco Radio documentation. The circuit has an input voltage of 250 V and the load current is 2 A. The transistors used are from that time.
Rumble is a low frequency noise between 25 and 200 Hz that appears in old turntables, affecting...
The integrated circuit 4136 consists of operational amplifiers of type 741 in the same enclosure and...
This circuit was obtained in an Argentine publication from 1973. The original version uses...