COP 20.00 (2000%) Times, Reactive Power Energy Source Generator,

[popolibero]

Hi Barry,


that is great work, thank you!


regards,
Mario

[popolibero]

Barry,


I see there's no DIL-6 version of the LTC6993, do you happen to know if there is an equivalent in that shape?


regards,
Mario

[listener191]

Hi Mario,

I used the SOT-23 version and mounted the LTC6993's on a DIL adaptor boards.

A lot of devices are going  to surface mount packages, which makes it harder to prototype.

The pulse width LTC6993,s are -3 variants which are falling edge triggered. This means the pulse starts on the back edge of the delay pulses.

Attached is a photo of the timing board mounted in an ABS box. Also a photo showing the pots mounted on the lid.

Pots mounted directly on the board would be better, as there is some jitter due to pickup on the long wires. Its only 1-2us but enough to upset the scope trigger. The scope trigger I take from of the zero cross inputs. 

The controls need to be labeled, after I finish playing with the trimming resistors.

Barry

[listener191]

Missed a photo!

[popolibero]

Hi Berry,


an adaptor sounds good, thanks. Nice setup you have. I was wondering, is there a way to have the 4 signals separated or combined in 1-2 and 3-4? I don't know how you are going to switch, but in my setup I need them like that (attached is a drawing, never mind the tranny symbols, they're mosfets). Until now I've been working on this setup with the sine wave and the 4 control signals recorded on multitrack (on computer) and then routed to an audio amp feeding the transformer and the control signals to my switching circuit.


regards,
Mario