This article describes the power supply system circuit of a small program-controlled switch. The voltage of -48V enters the DC/DC converter consisting of VT1 and VT2. The rectifier bridge DB1 rectifies and outputs 35V DC, and supplies the small switching power supply NEC8439 with stable +12V and +5V voltages; the other rectifier bridge DB2 rectifies the output -16V voltage, and the negative three-terminal regulator 79M12 and 79M05 output -12V And -5V voltage.
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- IEC60227, BS 6004
- 300/500V 450/750V
- Certification: CE
- Flame retardant or fire resistance or Low smoking and Halogen free or other property can be available
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