We found this circuit in a 1977 documentation. The National Semiconductor's LM380 is no longer easily found, but if used on this amplifier it provides excellent reproduction quality.
This VCO or Voltage Controlled Oscillator uses an 8038 integrated circuit that is not very easy to...
This circuit was obtained in a 1978 publication, but it can be assembled with equivalent...
This circuit serves to reinforce the AM band signals for receivers that use an external antenna. The...