Tuner with MOSFET (CB6914E)

This circuit serves as a reference for the components used and the time. The circuit is from 1967 RCA documentation. MOSFETs from that time are used.

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High Voltage Regulator (CB16989E)
The relationship of values between R1 and R2 determines the reference voltage for this circuit that...
Presence Detector (CB18741E) The original name of this project found in documentation from the 90s is “ghost hunting”. The circuit uses a not too long stretched plate or wire as a sensor and has its adjustment made by a trimpot. The power i
Presence Detector (CB18741E) The original name of this project found in documentation from the 90s...
Locked Micro Alarm (CB1513E)
This circuit locks when the sensors are opened. The relay can be 6 or 12 V depending on the power...