Bipolar stepper motor control (CB8456E)

Found in a 90s Popular Electronics, this circuit uses common components. The power transistors can be current equivalents of the TIP or BD series.

| Clique na imagem para ampliar |

LDR Sensitive Passage Sensor (CB24482E)
This circuit is more sensitive than the previous one, in the sense that we can use weaker and more...
100-second monostable (CB25671E)
This 3-transistor timer was found in the January 1994 issue of Electronics Now magazine. The...
Bistable with two 555 (CB1294E)
This circuit appears in other articles in this section, but it is very interesting. It is a...