A Transistor Pulse Amplifier Using External Regeneration

A pulse-regenerative amplifier using a point-contact transistor has been operated at a basic frequency of 3 megacycles. To produce regenerated pulses with waveshapes which are practically independent of the waveshapes of the input pulses, a germanium diode circuit has been used in conjunction with an external feedback path. This arrangement also provides for the synchronization of the output pulses with a master clock. Transformer coupling has been incorporated into the circuit to provide dc restoration.