| Electronics > Projects, Designs, and Technical Stuff |
| Power Pack repair attempt but cant discover parts |
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| Zero999:
--- Quote from: Florek on August 25, 2018, 12:27:03 pm ---What capacity should have capacitor? It says 68 but what uf nf? On mine capacitor from cdi it says u68 and 400v but when i measure it it shows 0.61uf this is normal? --- End quote --- The unit is often used as the decimal place, when marking a component because a dot could be confused with a speck of dirt. A capacitor marked with u68 would be a 0.68μF or 680nF capacitor. A reading of 0.61μF is 89.7% of 0.68μF, is most likely within tolerance so is perfectly fine. |
| BurningTantalum:
I'm not sure if this will be of any help, but I found it difficult to draw out the schematic of these units so I took a picture of the track side of the PCB and then overlaid the drilled holes and pads, then added the tracks as simple lines. I then removed the photo (just fiddled with the contrast etc) and printed the result so that I could add the components and number them. This made it easier to alter, and create a schematic (well, for me anyway...) BT |
| orbanp:
Hi BT, Nice work on tracing out the circuit! A picture of the other side of the pcb with the components would help, as well as an explanation on how the wires from 1 to 8 are connected. I also noticed that Florek's pcb is marked CD3 while the casing shows CD2! Looks like they upgraded the old ignition module. And there is also that hybrid chip! Still, that is not hopeless if he traces out the circuit. Here is a simple circuit, if Florek wants to build his own: https://www.homemade-circuits.com/how-to-make-capacitive-discharge/ On the other hand, I would look for some cheap commercial ignition modules for scooters/small engines, or similar, it would be engineered to stand up the harsh operating environmental requirements. A home built unit most probably would not last that long, unless engineered properly. Regards, Peter |
| Florek:
Yes that would bebice if you can wrote whatwire go to what number. About cheap cdi for scooter problem is that most of them are for 1cyl and in mine you have 3 wires from trigger coil since cdi give spark for specific cylinder |
| orbanp:
Quote from: Florek on Today at 01:07:25 am ... About cheap cdi for scooter problem is that most of them are for 1cyl and in mine you have 3 wires from trigger coil since cdi give spark for specific cylinder --- End quote --- Two of them would work fine. The supply wired in parallel, and the trigger coils wired individually. I would imagine that the trigger coil in your outboard has common ground and individual "inputs for the cylinders". That makes it three wires. You could verify that with a DMM. BTW, you still have not given your outboard model number, so people are still guessing here... Regards, Peter |
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