TTL Logic Level Indicator (CB13788E)

This circuit is powered by the source of the equipment under analyze. We found this configuration in a 1974 documentation.

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Limit Comparator (CB5086E)
This circuit appears elsewhere on the site. The circuit shown is from an American 1980s...
12 V x 2 A Power Supply (CB472)
This power supply can sources currents up to 22 A to a load. Voltage is 12 V and the transistor...
Mixer with the LM3900 (CB14219E)
The three-input audio mixer or mixer shown in the figure was suggested by the Linear Applications Handbook...