Timeline for Power supply with LM723
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 23, 2014 at 17:46 | comment | added | MJXS | That makes a lot of sense. I tested it with a 5-ohm power resistor. (With the voltage turned right down of course). I'll run a test on these today when I get out of the lab. | |
| Jun 23, 2014 at 17:44 | comment | added | Spehro 'speff' Pefhany | Frankly, assuming there are no shorts, the only thing that can kill Q1 is if Q4 is dead, and then only if you have a relatively low resistance load on the power supply. I suspect you'll find a collector-base short on Q4. | |
| Jun 23, 2014 at 12:49 | comment | added | MJXS | Thank you very much for your reply, this explains a lot in only a few lines. I'm going to spend some time pouring over the circuit with this info. Only one of Q3 or Q4 are used, in my case being Q4, a 3055 or similar MJ1004 I think. I think the 3055 is okay because I did swap it with another with no difference. I know for sure the 723 is okay (and funnily enough discovered 3 out of 4 new ones I bought are nonfunctional). None the less, I'm going to look up the 3055 datasheet and give her a test. Thanks again for your time. | |
| Jun 22, 2014 at 22:35 | history | edited | Spehro 'speff' Pefhany | CC BY-SA 3.0 |
added 62 characters in body
|
| Jun 22, 2014 at 21:57 | history | answered | Spehro 'speff' Pefhany | CC BY-SA 3.0 |