This circuit was found in the Linear Applications Handbook of the National Semiconductor of 1994. Some of the components used are not easy to obtain, but equivalents can be used.
This didactic circuit makes the sequential activation from 0 to 10 to demonstrate the functioning of a...
This power source was found in an old Argentine publication from 1973. The transistor could be the...
This circuit operates at a voltage of 1.3 V from a single mercury cell. We found in an old...