Logic level indicator 7400 (CB22407E)

In the figure we have a simple logic level indicator for TTL circuits or powered by 5 V.

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The I2C EERAM Memory is a Low - Cost NVSRAM that Eliminates the Need for an External Battery to...
Twilight switch (CB24176E)
This circuit for incandescent lamps was found in the February 1972 Radio Electronics magazine. The triac is...
Diode Temperature Sensor (CB15786E)
This circuit uses a diode as a sensor, activating a relay when a certain temperature is reached. The...