dissonantstring
Well-known member
hi righton,
please consider this...
what is your total current draw with all 4 channel boards and utilities (which can be LEDs, relays, etc. - not all on the green pre i know, but for future reference).
basically, what will your PSU be required to supply in current to the unit?
add up the total current of your unit and make sure that each leg of the transformer and each rail (+/-) will be able to produce this with headroom (i like a supply which can provide at least twice the total current draw it's expected to deliver - less heat from the transformer and parts will last longer with less strain).
do a search to see what kind of current the green pre consumes and be sure to add the extra current from utility parts as well for each channel and multiply by 4. then make sure your PSU parts (transformer, bridge rectifier, regulators and resistors) can handle at least twice that current. you'll need to search to see what kind of current a green pre channel pulls (sorry too lazy right now and i can't take up all your fun
). if in doubt, you could always make two PSU boards fed from a sufficient PSU transformer in parallel. the regulators will run cooler.
i would run the wires in parallel rather than series, but if you do go with series make sure that you use a gauge of wire which can take the current draw for all 4 channels (i'm sure 20ga. should be sufficient for 4 channels and smaller gauges can be used if running parallel).
hope this makes sense.
kind regards,
grant
please consider this...
what is your total current draw with all 4 channel boards and utilities (which can be LEDs, relays, etc. - not all on the green pre i know, but for future reference).
basically, what will your PSU be required to supply in current to the unit?
add up the total current of your unit and make sure that each leg of the transformer and each rail (+/-) will be able to produce this with headroom (i like a supply which can provide at least twice the total current draw it's expected to deliver - less heat from the transformer and parts will last longer with less strain).
do a search to see what kind of current the green pre consumes and be sure to add the extra current from utility parts as well for each channel and multiply by 4. then make sure your PSU parts (transformer, bridge rectifier, regulators and resistors) can handle at least twice that current. you'll need to search to see what kind of current a green pre channel pulls (sorry too lazy right now and i can't take up all your fun
). if in doubt, you could always make two PSU boards fed from a sufficient PSU transformer in parallel. the regulators will run cooler.i would run the wires in parallel rather than series, but if you do go with series make sure that you use a gauge of wire which can take the current draw for all 4 channels (i'm sure 20ga. should be sufficient for 4 channels and smaller gauges can be used if running parallel).
hope this makes sense.
kind regards,
grant
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