SUS with trigger voltage of 8 V. This component is used in TRIAC triggering and monostable circuits.
The sensor of this circuit is an NTC with a resistance between 200 and 1000 ohms. The resistor R1 must...
We found this circuit in an old Mullard (Philips) documentation on the 555 and 556 integrated circuit...
This source whose voltage depends only on the zener diode used, can supply currents up to about 3 A....