The pentode tube used in this circuit has 1.5 V filament. The circuit is a voltage amplifier with the 1U5 tube.
September 2017 - Texas Instruments' new TPS720 and TPS720-Q1 low dropout voltage (LDO) linear...
The frequency of this oscillator depends on the capacitors, being able cover the range between 1...
This circuit is indicated for small low power amplifiers allowing the use of a tweeter. The...