We find this circuit in an American 80's documentation. No further information about the transformer is given. The circuit serves as a reference for any repair work.
This circuit is indicated to power TTL circuits with current drains up to 500 mA. The transistor...
The values of R and C are set so that a time constant of the same order of magnitude as the...
This old fashioned amplifier can source some watts to a low impedance loudspeaker. The circuit...