A standard control unit typically consists of several functional stages to ensure reliable triggering:
: Uses pulse transformers or opto-isolators to electrically isolate the low-voltage control electronics from the high-voltage power circuit. Common Applications shema bloka upravlenija tiristorami
: Produces sharp, high-energy pulses (often using a UJT-based relaxation oscillator or dedicated ICs) that are strong enough to reliably trigger the thyristor gate. A standard control unit typically consists of several
Thyristor power controllers - 7 industrial applications - Jumo A (Blok Upravlenija Tiristorami or BUT) is an
: Allows for the adjustment of the firing angle ( ), typically from 0∘0 raised to the composed with power 180∘180 raised to the composed with power
: Synchronizes the control pulses with the AC supply voltage, usually detecting the "zero-crossing" point to establish a reference for the firing angle.
A (Blok Upravlenija Tiristorami or BUT) is an electronic system designed to generate and distribute control pulses to the gate terminals of thyristors. Its primary function is to regulate the "firing angle" (