Philips 170S6 LCD monitor power supply high voltage integrated IP board circuit diagram

Crystal oscillator

description:

Philips 170S6 liquid crystal display actually uses a variety of power supply high-voltage integrated boards. In this paper, the IP board using DAP02ALS+B3193 scheme is measured. Figure 1 shows the circuit diagram of the DAP02ALS integrated block power supply, and Figure 2 shows the high-voltage part of the B3193 integrated block. . A DAS01A chip is also used in this type of integrated board power supply. It integrates two independent op amps and a 2. 5V reference. One of the op amp's non-inverting inputs is connected to a 2.5V reference. Equivalent to the common TL431A plus the op amp circuit. This chip is often used in some advanced devices to replace the TL431 and its associated circuits. DAP02ALS pin function, voltage, resistance, please see the article!