This circuit produces the sound of a motorcycle or an outboard motor. The frequency is adjusted in the pot. For supplies above 9 V the BD136 must be equipped with a small heat sink.
May 2017 - Mouser Electronics announces the availability of the new Murata SCA3300-D01 3-axis...
In this circuit R1 has 2M5, R2 and R3 are 5M obtaining a detection current for the diode of 0.5...
WWV is the American broadcaster of hourly signals and frequency standards that operates at 3.5...