Indicated by Popular Electronics to be used with a car headlight, this circuit can also have applications in fixed signaling. The power MOSFET must be in accordance with the lamp.
This is the traditional configuration of a high-pass filter with an operational amplifier, such as...
Although the BD135 transistor is not specifically for RF applications, some of them can easily...
With the circuit shown in the figure we have a frequency modulation which is produced by a...