Timeline for Direct FM generation using varactor diode
Current License: CC BY-SA 4.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jan 5, 2019 at 10:19 | comment | added | Tony Stewart EE since 1975 | Here's 100kHz at 10% 1us 1 Ohm 1Mhz tinyurl.com/y89zjhvr But you have to use a Power Sch. Diode which is not carrying any current in this SIM | |
| Jan 5, 2019 at 10:11 | comment | added | Tony Stewart EE since 1975 | Look again. it was set to normally open 0.1% 1us low resistance ( you can adjust which also affect current rate, when you point at part or wave the other lights up in light blue | |
| Jan 5, 2019 at 10:06 | comment | added | Muhammad Naufil | @TonyEErocketscientist Yes I do. You are taking voltage across the inductor? right? And also tell that clock of 1 Khz means, 1000 times a second, the switch is closed. Then clock pulse and 5 V DC adds up, meanwhile the switch is closed? | |
| Jan 5, 2019 at 9:18 | comment | added | Tony Stewart EE since 1975 | Next Change the clock duty cycle from 0.1% to 1% then reset and it rises to 210V.. Now have you learned how to compute DC ramp energy and LC stored energy yet? | |
| Jan 5, 2019 at 9:14 | comment | added | Tony Stewart EE since 1975 | THe energy stored depends on the DC current at the end of the dt of the pulsed switch for V=LdI/dt and THAT raises the voltage of the oscillation. | |
| Jan 5, 2019 at 9:13 | comment | added | Muhammad Naufil | @TonyEErocketscientist Why is it producing 30 to 40 Volts at output? | |
| Jan 5, 2019 at 9:06 | vote | accept | Muhammad Naufil | ||
| Jan 4, 2019 at 17:37 | comment | added | Tony Stewart EE since 1975 | Falstad web javascript tinyurl.com/yb2k2lkl It's awesome but time scale is under options > or mouse wheel and shift or control but no varactor model yet | |
| Jan 4, 2019 at 17:24 | comment | added | Muhammad Naufil | And which simulator are you using? I liked it | |
| Jan 4, 2019 at 17:24 | comment | added | Jack Creasey | @Tony It's interesting that you don't need a continuous osc if you want to do simple FM chirp modulation instead of ASK. So a simple current pulse to produce symbols may be quite adequate. | |
| Jan 4, 2019 at 17:21 | comment | added | Muhammad Naufil | Thanks for responding. Why are you applying specifically 2.9 volts? | |
| Jan 4, 2019 at 16:37 | history | answered | Tony Stewart EE since 1975 | CC BY-SA 4.0 |