| ??? 07/27/05 09:37 Read: times |
#98253 - Take one apart Responding to: ???'s previous message |
Prahlad J. Purohit said:
Do I really need Capacitor bank for converting rectified Pulsating DC to pure DC. What kind of capacitors are suitable here 400V min 100Amps. Do these induction heaters 1. Rectify using thyristors [ SCR ]. 2. Capacitor for converting to pure DC. 3. IGBT/MOSFET H Bridge for converting to 40kHz AC. Its your field Prahlad, can't you get inside another unit and find out ? Anyway, to your points 1.) I doubt. What would be the point ? Just use BIG rectifiers. 2.) Unavoidably, but very high voltage caps hold more energy than their 5V counterparts. It doesn't have to be VERY pure DC though, so lots of ripple would be acceptable, provided you can still get weld drive. 3.) Yes. 4.) You need VERY low ESR caps, but mechanically big ones HAVE low ESR don't they ? Steve |
| Topic | Author | Date |
| High Power High Frequency. | 01/01/70 00:00 | |
| high voltage high frequency | 01/01/70 00:00 | |
| Similar ? | 01/01/70 00:00 | |
| Capacator? | 01/01/70 00:00 | |
| Take one apart | 01/01/70 00:00 | |
| SCR's | 01/01/70 00:00 | |
| Big Caps | 01/01/70 00:00 | |
| isn't a weld basically a short? | 01/01/70 00:00 | |
| 400V 100A | 01/01/70 00:00 | |
| Big caps | 01/01/70 00:00 | |
| Inverter | 01/01/70 00:00 | |
| Yes they are similiar | 01/01/70 00:00 | |
| not ip infringing | 01/01/70 00:00 | |
| ip | 01/01/70 00:00 | |
| Nah | 01/01/70 00:00 | |
| High current | 01/01/70 00:00 | |
| Spot the welder | 01/01/70 00:00 | |
Re: High Current. | 01/01/70 00:00 |