This circuit was found on an 80's Ham Radio. The transistor admits equivalent. The circuit can generate 20 to 100 MHz signals operating at the fifth harmonic of the crystal.
This very low current negative bias source can be used in any inverter. The output voltage is...
This circuit was obtained in a 90’s American documentation. The FET can be replaced by a modern...
This simple circuit indicates the conductivity of materials through two LEDs and two LEDs are...