Voltage amplifier with the 37 tube (T392E)

Found in a modern design book with tubes, this stage with the triode 37 has a plate current of 3.7 mA.

VTVM Adapter (CB7347E)
This circuit for voltmeter has an output of 1 V for 100 uA having been suggested by American...
VCNT2020 Reflective Optical Sensor with Transistor Output
April 2017 - Mouser Electronics is providing Vishay's new VCNT2020 optical sensors for position...
Hartley Audio Oscillator (CB10816E)
This circuit was obtained in the publication 101 Electronics Projects of 1979. The circuit can be...