This circuit causes an LED to flash at a frequency determined by the capacitor. The circuit is powered by only 3 V and can be used for signaling.
Equivalent transistors can be used in this high impedance and low capacitance circuit. The circuit is...
This circuit uses a modulated signal from a PLL 567 to operate safely with an infrared emitter. The...
In the figure we have a battery charging circuit for currents up to about 5 A. In series with the...