Dual tube receiver (T1600E)

This receiver employs two dual triode valves. Receiver is from a 1949 Radio Electronics. Power supply not provided.

Programmed gain amplifier (CB7266E)
Suggested by Siliconix in documentation from the 90s, this amplifier has its gain digitally...
ER11 High Isolation Power Transformers (COM182E)
January 2017 - Pulse Electronics ER11 transformers with high insulation can be obtained from...
Battery Voltage Monitor (CB6066E)
This circuit is from an American 80's documentation. The circuit indicates when the voltage of a 9 V...