| Query | User |
|---|---|
| 555 timer square wave | entered by user 1649329 |
| capacitor discharge circuits | entered by user 2402791 |
| hfe transistor | entered by user 6249384 |
| how to build a telephone ringer | entered by user 2738565 |
| led game | entered by user 6249384 |
| lm386 chip | entered by user 2779726 |
| servo remote switch multi talking sound board | entered by user 10915150 |
| ujt | entered by user 1411796 |
| vu meters for sound light displays | entered by user 9010100 |
| vu meters for sound light displays | entered by user ditto |
| what does a capacitor do | entered by user 17119476 |
| what does a capacitor do | entered by user ditto |