This 50% active cycle TTL clock generates signals from 4 to 20 Hz. Its power must be supplied with 5 V and other frequencies can be generated with capacitor replacement.
This voltage regulator circuit has 1 A of maximum current for a TIP32 and 500 mA for a BD136. The...
The output voltage depends on the zener diode. Zener in the range between 1.2 to 12 V rated to 1 W...
I found this circuit in a doc umentation from the year 1968. It uses germanium transistor and has...