Ammeter (CB9660E)

This current meter with many scales was found in a 80s American documentation. The operational amplifier is from that time, uncommon nowadays.

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TTL Variable Oscillator (CB25333E)
This circuit uses two TTL trigger inverters to generate signals that can be adjusted at R1. The...
IQS572 B000 Trackpad and Touchscreen Controller for Arduino (COM138E)
November 2016 - Azoteq IQS572-B000 ProxSense, a Toucjscreen and Trackpad controller designed for...
Two diodes power supply (CB4243E)
This is the traditional unregulated power supply configuration with full wave rectification. For currents...