Service and Repair

Articles
Title
The Workbench instruments – The multimeter (ART595E)
Components Recovery (SER003E)
Troubleshooting with the Multimeter (SER002E)
Troubleshooting and Repair (SER001)

15 to 5 V Step Down Regulator (CB18999E)
The maximum current of this circuit is 200mA, and the ripple is only 50 mV. The circuit is...
Selectable Gain Preamplifier (CB23999E)
This circuit is from a Radio Electronics from February 1970. The circuit selects the input...
Timed Alarm (CB24140E)
Found in the July 1970 Radio Electronics magazine, this circuit has an adjustable activation time...