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| LM317 boosting problem | ||
| Author wyslnhhh56 Views 10 Posted at 2008/8/27 01:14 [View In Forum] | ||
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I want to boost the current of LM317 or other regulator IC.ekjiaba ekjiaba I have gone through data sheet of it and found the info over thereekjiaba ekjiaba but not much useful for meekjiaba ekjiaba then i got other ckt digram too but it is using T0-3 type transistorekjiaba ekjiaba ekjiaba ekjiaba Can we have currents upto 4A using some BD series or TiP series To-220 type or such transisor |
| Reply No. | Replier | Total Replies 5 [View All Replies] [New Reply] | Replied at |
| 1 | rickli | TO-220 transistors are as good as transistors in TO-3 package .. Quite often you can find the same transistors available in both packages, for example, 2N3055 (TO-3) and MJE3055 (TO-220) .. Also you can use TIPs and BDs .. For example: TIP120 BD243 .. and a good practice is to use more than one, all connected in parallel with small (0.1Ω) equalizing emitter resistors .. In linear applications just keep in mind heat generation and equipe a power transistor with sufficient heatsink .. Regards, IanP |
2008/8/27 01:14 |
| 2 | htc2498 | Thanks for your response Sir. I am satisfied with your answers Which diodes should be used for such rectifiers I have 1N4007 but I think It won't handle >3A. Which is next most widely available. Rectifier diodes and diode bridges |
2008/8/27 01:14 |
| 3 | fusarium | Just check out the MUR series of rectifier diodes. MUR860 is an 8A device Giri |
2008/8/27 01:14 |
| 4 | spacebac | The next step up is the 1N540X series - 3A current .. see picture below .. If you need more current you have to go for a bridge and if you intent to draw that current continuosly fit it with a small heatsink .. Regards, IanP |
2008/8/27 01:14 |
| 5 | htc2498 | 1N540x is widely used and it is easily available here. thanks for pointing out that. and u are talking about diode bridges like MDA series. |
2008/8/27 01:14 |
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