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.
We present a comparator with signal resolution in the submicrovolt range. The matched pair of...
We found this circuit in an Argentine publication from the 1970s. The circuit can be used to...
Found in a 1968 Motorola manual, this DC circuit uses components from the era. The circuit fires in...