Schematic of the voltage buffer where Vin is the input female N-connector and Vout is the output male N-connector. The ground on the power supply is coupled to the chassis and outer conductor of the N-connectors. The main buffer core is the push-pull coupled Sziklai pairs (NPN: BFQ19, PNP: BFQ149) with diode-coupled (base-collector is shorted) feedback. The module based on the LM6171 operational amplifier serves as a voltage follower which senses and corrects for the errors in the output waveform produced by the previously mentioned buffer core. The non-inverting input has been shifted downwards in voltage to compensate for the internal offset in the LM6171.