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Registered Member #2317
Joined: Thu Aug 27 2009, 01:45AM
Location:
Posts: 27
Ok, I feel that I've exhausted my noob capital here so I'm going to only ask one more question.
I've downloaded and started using NI Multisim, which is fantastic btw. I've set up a circuit and it works perfectly. My question, however, is about the transformer I'm planning on using, yes I've decided to go ahead and use an isolation transformer.
Will this transformer, , , with 115VAC input, produce 230VAC output when the primary is connected in parallel and the secondary is connected in series?
If so, the rest of my circuit only consists of a voltage doubler.
Registered Member #2099
Joined: Wed Apr 29 2009, 12:22AM
Location: Los Altos, California
Posts: 1716
Jordan aka Axiom wrote ... Will this transformer, , , with 115VAC input, produce 230VAC output when the primary is connected in parallel and the secondary is connected in series?
Yup.
Jordan aka Axiom wrote ... If so, the rest of my circuit only consists of a voltage doubler.
[edit] Here's a suggestion: skip the doubler for now. With the 1:2 transformer and a bridge rectifier, you can quickly charge the caps to 325 VDC, or 350 V at high line voltage. Plenty of joules to play with at 68000 uF.
After you gain experience with actual switches and loads, if you have not lost interest, you can upgrade the charger. How much extra stuff will you need to reliably protect against overvolting and blowing up your capacitor bank?
Instead of power resistors to limit the charging current, how 'bout a 300W halogen lamp in series with the primary? Its large positive temperature coefficient is ideal for this application. As the bank charges up, the lamp resistance will drop to much less than 10 ohms so final stages of charging won't be too slow.
Registered Member #2317
Joined: Thu Aug 27 2009, 01:45AM
Location:
Posts: 27
Klugesmith, thanks for your suggestion. The secondary on the transformer is rated to 0.75 VA, so doing some simple math, it seems the 300W would be too much. I'm thinking a 150W bulb would it well.
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Voltage Tripler - Cap Charger
