Using Maxim components, this circuit consists of a regulator to a boost converter. The circuit operates in the indicated voltage range. The MAX5160M consists of a digital potentiometer.
The MC15555 of this circuit is the old version of the common 555. What this circuit does is...
We find this circuit in an American 1980s documentation. The circuit can still be assembled...
This circuit triggers an LM380 oscillator, producing an audio tone with light falling on the LDR....