Timeline for Use of LM386 with simple regen receiver
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Oct 1, 2022 at 15:59 | answer | added | Audioguru | timeline score: 0 | |
| Sep 30, 2022 at 13:51 | vote | accept | Tom Dickens | ||
| Sep 30, 2022 at 13:51 | comment | added | Tom Dickens | @glen_geek Thank you, I will give that a try. I was concerned because I tried connecting the output to a Velleman 4W kit amplifier I had built (based on a TDA2003 IC), and the radio ceased to function. I assumed there was a loading of the circuit caused by impedance mismatch. Will try your suggestion. | |
| Sep 30, 2022 at 13:08 | comment | added | glen_geek | Tom, your posted schematic is "standard" and should work - I've added one to a regen too. Some users run into problems when it is powered by a weak 9V battery with the "putt-putt-putt" sound of motorboating when driving a 8-ohm (or lower) speaker. C2 is there to help stop motorboating. A larger value may help if you run into this problem. | |
| Sep 30, 2022 at 2:41 | answer | added | user319836 | timeline score: 3 | |
| Sep 30, 2022 at 1:23 | comment | added | Tom Dickens | Yes, I like both things - I am learning how regens work - this is a hobby... | |
| Sep 30, 2022 at 0:43 | comment | added | Audioguru | Do you like to fiddle with the regen control instead of using a normal superhet AM radio that has automatic gain control? Do you like the poor sound quality of AM radio? (No high audio frequencies and lots of interference noises). Try the LM386 without C5 (to reduce its gain). | |
| S Sep 29, 2022 at 23:55 | review | First questions | |||
| Sep 30, 2022 at 5:28 | |||||
| S Sep 29, 2022 at 23:55 | history | asked | Tom Dickens | CC BY-SA 4.0 |