This 80's Hands On Electronics circuit automatically switches from high light to low light when an oncoming car illuminates the sensor. The circuit is powered by the car's own battery.
This telegraph microtransmitter for a frequency determined by the coil and the crystal was found...
This basic amplifier using complementary transistor in the output sources about 0.5 W of good...
In the figure we have a high pass filter configuration with voltage gain equal to 2. This gain is...