Battery Status Indicator (CB6064E)

This bargraph circuit is from an ancient American documentation. It indicates the charge state of a set of 4 batteries from 9.6 to 5.2 V.

| Clique na imagem para ampliar |

TDA2002 Amplifier (CB420E)
When powered by a 14 V supply this circuit source 5,2 W to a 4 ohm load. For a 2 ohm load this...
High Input Impedance Amplifier (CB978E)
This three-transistor amplifier uses a JFET at the input to increase the input impedance. The...
2 mA Constant current sourcer (CB1199E)
In the figure we have the way to obtain an adjustable constant current source of 2 mA. The...