Search found 6 matches

by rf burns
Sun Mar 08, 2009 2:33 pm
Forum: General Discussion
Topic: 12VDC to 24VAC inverter
Replies: 13
Views: 2793

Re: 12VDC to 24VAC inverter

If you guys are just looking to generate a nice sine wave try this chip ML2036. Its a serial loaded sine wave generator, easy to use, but requires + & - voltages. It will not work for me in this case as I am looking for a power supply circuit with good efficiency. Using this would make it an analog ...
by rf burns
Sun Mar 08, 2009 7:40 am
Forum: General Discussion
Topic: 12VDC to 24VAC inverter
Replies: 13
Views: 2793

Re: 12VDC to 24VAC inverter

Ok, that looks like something I can do without even getting into the PWM function, but I'll never learn it without doing.

Thanks for the guidance
by rf burns
Sun Mar 08, 2009 5:08 am
Forum: General Discussion
Topic: 12VDC to 24VAC inverter
Replies: 13
Views: 2793

Re: 12VDC to 24VAC inverter

The existing transformer is your basic iron core 60hz transformer, so I can't put a high frequency switching through it. The 12V side is center-tapped so I need only 2 FETS to drive it. I have written a number of programs for the PIC processors using PIC C from CCS so the rest of the program will no...
by rf burns
Sat Mar 07, 2009 1:53 pm
Forum: General Discussion
Topic: 12VDC to 24VAC inverter
Replies: 13
Views: 2793

Re: 12VDC to 24VAC inverter

Thats exactly what I have, mine is a 1977 GMC. I have both modified and pure sine wave inverters lying around my office after trying to make them work at remote tower sites. They do work, but they have some shortcomings. I also have this thing about converting power up and back down, it just rubs me...
by rf burns
Sat Mar 07, 2009 7:31 am
Forum: General Discussion
Topic: 12VDC to 24VAC inverter
Replies: 13
Views: 2793

12VDC to 24VAC inverter

Hi all, I have a refrigerator in my old motorhome that uses a 12VDC to 24VAC inverter to run a swing motor compressor in it. The inverter is toast and a new one is no longer available. The old one just used a multi-vibrator circuit driving some switching transistors. I want to replace the old circui...
by rf burns
Thu Nov 22, 2007 3:09 pm
Forum: General Discussion
Topic: I Hear Sirius Radio Loud and Clear at 88.1 Mhz
Replies: 8
Views: 3069

Wish my garmin with XM could get a decent FM signal to car antenna less than 3 feet away... The signal is noisy and the deviation is very low, less than 25khz according to my IFR. Its not just mine, I have one other one and 2 friends as well.. same thing. I've tried the aftermarket FM modulators wit...