Lamp failure indicator (CB8384E)

This circuit indicates when a 28 V lamp burns, lighting a neon lamp with higher voltage. The circuit is from 1969 documentation.

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Electronic Machine Gun (CB17369E)
Touching the sensor with your fingers, this circuit produces a machine gun sound. The circuit must...
Hearing and Motion Sensor Platform
August 2017 - STMicroelectronics' BlueCoin development environment is available at Mouser...
Garage Warning (CB6041E)
We found this circuit in an old documentation. Its purpose is to turn on warning lights when the...