aparat de sudura

[suiram]

Pentru Suiram :Vreau sa luam legatura cu privire la constructia unui invertor de sudura realizat de mine.

Ok.Sunt de acord sa luam legatura

[suiram]

stie cineva o schema de test la igbt?

[bolek]

Digital multi-meter (DMM) test procedure: * Equipment Requirement ? DMM with diode check mode and battery voltage less than 20V. (Typical units using 9V battery are OK). * Collector-Emitter Junction test: 1. With the module out of circuit remove the conductive foam and short the gate to emitter. 2. With DMM in diode check mode, the collector to emitter should give a normal diode reading with positive on the emitter and negative on the collector. 3. The DMM should read open or infinite with positive on the collector and negative on the emitter. Damaged IGBTs may test as shorted in both positive and negative directions, open in both directions, or resistive in both directions. * Gate Oxide test: With the DMM in resistance mode the resistance from gate to collector and gate to emitter should read infinite on a good device. A damaged device may be shorted or have resistive leakage from gate to collector and/or emitter.

[Vizitator]

Salut , Detin un traf de 320 W , scoate pe secundar 18V / 16 A . Ma poate ajuta cineva cu o schema simpla pentru un aparat de sudura ? Ceva cu mosfeturi .

[remus68]

Pe prima pagina a acestui topic, a fost postata o schema, care s-a pierdut intre timp - era mai mare de 1MB. O mai postez eu inca o data - de data asta fara fotografiile care insoteau schema.

[Vizitator]

Super! .Cei care pun "utilajul" in practica sa nu renunte la alimentarea in comutatie a partii de joasa tensiune.

[suiram]

Are cineva o schema de oscilator cu SG3525 pentru invertor de sudura

[remus68]

http://kaltaghii.persiangig.com/welding%20map02.GIF