Service and Repair

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

Battery Status Indicator (CB12325E)
We found this circuit in a 1990 documentation. The operational amplifiers are type 741 and the LED is...
Ramp generator with the 555 (CB7598E)
We found this circuit on an Elektor from the 90s. The frequency is given by capacitor C1. The...
Instrumentation Amplifier (CB20984E)
Found in National Semiconductor publication from the 1980s. This gain-100 circuit can be...