12.Power medical 3KV isolation with voltage stabilized short-circuit protection single output power supply: WRFXXXX-1W/2W series
Wide voltage input 3KVDC isolated voltage stabilized single output module power supply WRF series products, the output has self-recovery overload and short-circuit protection functions, and the voltage will not rise when there is no load. The VD / WRF / WRE series module power supply developed and produced by Sunyuan Technology is a national patent product with high electrical isolation, anti-surge and anti-static characteristics, and output with self-recovery overload and short-circuit protection (national patent number: ZL 200420042857.1). Recently, the product has passed the high isolation/anti-resistance test in the relevant technical inspection of the safety high isolation (4500V) and antistatic (direct contact of the external terminal: 8000V) with the external RS485/RS232 interface of the power load management control terminal (user management terminal)successfully . Surge/anti-static test. It has been widely used in the electric instrument and meter manufacturing industry.
The VD / WRF series of DC-DC isolation module power supplies are made with a reliable process of ceramic substrates and printed resistors, which can meet industrial-grade vibration, humidity, electrostatic interference, wide temperature (-45—+85 ℃) and other harsh environments work. The products are packaged in SIP single row and DIP double row packaging. Main application areas: electrical equipment grounding interference suppression, external instrumentation (RS485/RS232/RS422/USB/IEEE1394 and other communication interfaces) port power isolation and conversion, safe high isolation/anti-wave isolation of exposed metal parts of the instrument shell interface terminals Surge/anti-static isolation (national safety standard: above 8KV).
The typical application of DC-DC power supply module (module power supply), voltage polarity conversion, selection of external filter capacitor, overload short circuit protection circuit and series and parallel use are introduced in detail. The correct use method can prolong the service life of the product, avoid interference, overheating, self-excitation, poor startup and other phenomena and irreparable damage.
