Amplifier stage with the T411E (T411E)

The pentode tube used in this circuit has 1.5 V filament. The circuit is a voltage amplifier with the 1U5 tube.

Mini Amplifier (CB978E)
This circuit was found in a Electronics Handbook (1989). The shown amplifier provides a few...
Half Wave Dimmer (CB5296E)
The SCR used in this 80's circuit depends on the load. The control is half wave and instead of the neon...
10 W 12 x 115 VA inverter 10W (CB7297E)
This circuit was found in Delco documentation from 1966. The components are from that time....