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U208B - Open Loop Phase Control Circuit

General Description

The integrated circuit, U208B, is designed as a phase control circuit in bipolar technology with internal supply-voltage monitoring.

As the voltage is built up, uncontrolled output pulses are avoided by internal monitoring.

Furthermore, it has internal-current and voltage synchronisation.

Key Features

  • D Automatic retriggering D Triggering pulse typ. 125 mA D Voltage and current synchronisation D Internal supply voltage monitoring D Current requirement ≤ 2.5 mA Package: DIP8 Block Diagram BYT77 18 kW/ 2W R3 220 kW/ 0.5 W 7 Voltage detector 8 Current detector Automatic retriggering Output pulse 3 R7 180 W R4 470 kW/ 0.5 W D1 R1 M L 95 11224 TIC 236N VM = 230 V ~ 5 4 R2 180 kW R6 18 kW 100 kW R5 120 kW 6 10 nF C2.
  • VS C1 22 mF/ 25 V N Phase control unit ö = f (V6) 2 Supply voltage.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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U208B Open Loop Phase Control Circuit Description The integrated circuit, U208B, is designed as a phase control circuit in bipolar technology with internal supply-voltage monitoring. As the voltage is built up, uncontrolled output pulses are avoided by internal monitoring. Furthermore, it has internal-current and voltage synchronisation. It is recommended as a low cost open-loop control. Features D Automatic retriggering D Triggering pulse typ. 125 mA D Voltage and current synchronisation D Internal supply voltage monitoring D Current requirement ≤ 2.5 mA Package: DIP8 Block Diagram BYT77 18 kW/ 2W R3 220 kW/ 0.5 W 7 Voltage detector 8 Current detector Automatic retriggering Output pulse 3 R7 180 W R4 470 kW/ 0.