Timeline for Purpose of components in op-amp radio circuit
Current License: CC BY-SA 3.0
3 events
| when toggle format | what | by | license | comment | |
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| Jun 26, 2017 at 5:26 | comment | added | Jack Creasey | Yes ....The diode is a half wave rectifier with 100k Ohm load, so the cap/resistor provide RF filtering (the rectified peak is the audio signal) while allowing the audio modulation to be presented to the first op-amp. | |
| Jun 26, 2017 at 2:13 | comment | added | phi1123 | Thanks for your answer. I hadn't considered power output of the op-amp as an issue, so this makes sense. I understand the diode rectifies/demodulates the signal coming in from the tank circuit, I'm just confused as to what the 300 pF cap/100k res connected to the cathode are doing? Some sort of filtering? | |
| Jun 26, 2017 at 1:31 | history | answered | Jack Creasey | CC BY-SA 3.0 |