=== CC/CV ===

https://electronics.stackexchange.com/questions/299200/precision-circuit-that-is-cc-and-cv-circuit-or-power-supply


== shopping list zdroj proudu ==

| R  | 47k |  |
| R | 1k |  |
| R | 4k7 (5k6) |  |
| C | 22n | https://www.gme.cz/ck-22n-50v-x7r-10-rm5-08-hitano |
| C pol | 0.1uF | https://www.gme.cz/ce-0-1u-100vt-jam-tk-5x11-rm2-bulk |
| D | 1n4007 | https://www.gme.cz/dioda-1n4007 |
| D | D1n5408 | https://www.gme.cz/1n5408 |
| Q | bc547 | https://www.gme.cz/bipolarni-tranzistor-bc547b-to92 |
| Q | bc 557 |  https://www.gme.cz/bipolarni-tranzistor-bc557c-to92 |
| Q | bd137 | https://www.gme.cz/bipolarni-tranzistor-bd137-16-to126 |
| Q | bd245b | https://www.gme.cz/bipolarni-tranzistor-bd711-to220 |