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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5-V 1-A TTL Power Supply (CB14111E)
This is a simple Power supply for TTL circuits using the 7805 IC. This IC can source up to 1 A to...
Oscillator and Divider up to 16,384 using the 4060 (CB385E)
The frequency of a XTAL (up to 1 MHz) can be divided by powers of 2 up to 16,384 using the CMOS IC...
Binary demonstrator (CB22148E)
This circuit serves as a binary demonstrator using 3 LEDs. The circuit can be scaled up for a...