This circuit is suitable for the calibration of old analog oscilloscopes. It was found in documentation from the 1970s and could be useful if someone is recovering an oscilloscope of the time.
When the input voltage is higher than 2/3 of the power supply voltage the green LEDs glows. When...
This is a conventional alarm that uses NO and NC type sensors for doors and windows. The circuit is...
This circuit was obtained in a 1972 RCA power transistors manual. The transistor admits...