With an output power of 1.5 W under a 12 V supply, this circuit makes use of transistors that are still common today. Power transistors must be mounted on heat sinks.
This circuit uses a variable transformer available at the time. This turns of the windings were...
Indicated to be used at the sensor input of a PC, this circuit was found in an English...
We found this amplifier for hearing aids or hearing aid using only transistors in a documentation from the...