This circuit was found in a 90’s Popular Electronics. The circuit is used to analyze noise in vehicles. The output must be in a low impedance headset.
This power supply was originally created for the CB16760E (Loudness System) but can be used in any...
Found in 1980s Electronic Engineering, this circuit uses common phototransistors as sensors. The...
This simple, unregulated power supply with an approximate 6 V output voltage can supply currents up to...