yawg3d
Head-Fier
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- Dec 2, 2003
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Hi everyone,
the following design is meant to be used as a PSU for various CMoy-like projects. In its current form, it should take 8V AC from a wall wart and output +-8V DC. The reason for this approach is that I do not want to mess with mains wiring myself (otherwise I would have gone with a double-secondary transformer).
The design is based on datasheet material and some textbook ideas.
The values for C2 and C3 are taken from datasheets and should be okay (C2 will be tantalum). The value for the filter caps C1 are based on a quick-n-dirty Spice simulation of the rectifier/filter stage which says that as long as the load draws less than about 250mA, the input wave form will stay above 8V at all times. Diodes are meant to be 1N4001s.
I would be very happy if some experienced folks could have a quick look to check whether (a) the design looks sane and (b) I can get away with 16V caps or whether I should go for 25V to be safe.
Thanks !
the following design is meant to be used as a PSU for various CMoy-like projects. In its current form, it should take 8V AC from a wall wart and output +-8V DC. The reason for this approach is that I do not want to mess with mains wiring myself (otherwise I would have gone with a double-secondary transformer).
The design is based on datasheet material and some textbook ideas.
The values for C2 and C3 are taken from datasheets and should be okay (C2 will be tantalum). The value for the filter caps C1 are based on a quick-n-dirty Spice simulation of the rectifier/filter stage which says that as long as the load draws less than about 250mA, the input wave form will stay above 8V at all times. Diodes are meant to be 1N4001s.
I would be very happy if some experienced folks could have a quick look to check whether (a) the design looks sane and (b) I can get away with 16V caps or whether I should go for 25V to be safe.
Thanks !