This circuit was found in the December 1992 Radio Electronis magazine. R2 is an NTC, there is a MOV protector or NTC thermistor. The current depends on the thermistor used.
This oscillator produces short duration pulses using a PUT. The circuit is from a Radio...
This is a one-channel application for the Texas Instruments TMP390 sensor obtained directly from...
With this circuit you can control up to 3 A of LEDs in different sequences, using a PWM...