psu design with the lm350

tjalf said:

hi there.. hope you can help me...

i got a 24VAC 3,6A transformer and i need to make an 6.3V 3A powersupply...

can the lm350 be used for this?? i have looked at the pdf files from national.com but my brain cant get the idea of the schematics...

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tjalf said:

hi there.. hope you can help me...

i got a 24VAC 3,6A transformer and i need to make an 6.3V 3A powersupply...

can the lm350 be used for this?? i have looked at the pdf files from national.com but my brain cant get the idea of the schematics...

is the someone who could help me??

thanks for your time

Click to expand...

Nigel Goodwin said:

tjalf said:

hi there.. hope you can help me...

i got a 24VAC 3,6A transformer and i need to make an 6.3V 3A powersupply...

can the lm350 be used for this?? i have looked at the pdf files from national.com but my brain cant get the idea of the schematics...

Click to expand...

The transformer is really far too high a voltage, the regulator would need to dissipate about 100W of heat!.

You mention 6.3V, this is the standard heater voltage for 'E' series valves, is it for a valve heater supply?.

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tjalf said:

thats correct... how small transformer should i den have??
i can get an 2*6v 2×3333mA transformer to an ok price would it be to small??

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