Absolute Value Comparator (CB21598E)

Based on common operational amplifiers, this circuit was found in Texas Instruments documentation. The power supply must be symmetrical.

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Simple Transistor Test (CB3815E)
This ttransistor test was found in a 1987 documentation. It is a simple oscillator that allows to...
Telephone Dialer for Alarm (CB18755E)
This circuit was found in documentation from the 90s. Its purpose is to dial a programmed number...
FET High Impedance Amplifier (CB13222E)
We found this amplifier with high input impedance and low capacitance, using FET, in a...