Timeline for Head to tail transistor pair, not a Darlington pair, not a Szlikai Darlington
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| Nov 15, 2020 at 3:08 | history | edited | Tioneb | CC BY-SA 4.0 |
clarification about the TL431 and the zener.
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| Nov 14, 2020 at 12:54 | vote | accept | Tioneb | ||
| Nov 14, 2020 at 12:54 | comment | added | Tioneb | @RussellMcMahon Indeed, but there is actually another 100R resistor after C3 in the original circuit. The current load is very low. The only purpose of the circuit is to energize an OPA337 that is driving small capacitors, so virtually no load. Edit: also, you would loose the filtering effect of R5 C3. | |
| Nov 14, 2020 at 11:02 | comment | added | Russell McMahon♦ | R3 C1 should connect to the right of R5 if regulation is not to suffer from loading. R5 drops 0.1 v per mA which wrecks regulation. | |
| Nov 14, 2020 at 9:19 | answer | added | Circuit fantasist | timeline score: 2 | |
| Nov 14, 2020 at 9:08 | comment | added | Circuit fantasist | There is nothing weird in this "pair". It is the well-known current protection (see, for example, the 741 output stage). The current threshold is set by the value of R1. | |
| Nov 14, 2020 at 8:45 | review | First posts | |||
| Nov 16, 2020 at 15:20 | |||||
| Nov 14, 2020 at 8:43 | history | asked | Tioneb | CC BY-SA 4.0 |