M memox New Member Jul 24, 2007 #1 hi i prepared a circuit which has relay and ic. Input 220V ac output 12 V dc. Must 1-) to be cheaper. (transformerless, not 7805 etc) 2-) to be ideal and stable could you send a diagram. thanks
hi i prepared a circuit which has relay and ic. Input 220V ac output 12 V dc. Must 1-) to be cheaper. (transformerless, not 7805 etc) 2-) to be ideal and stable could you send a diagram. thanks
blueroomelectronics Well-Known Member Jul 24, 2007 #4 Not likely at 1A, usually the transformerless supplies are a few ma. and they can get quite hot not to mention dangerous.
Not likely at 1A, usually the transformerless supplies are a few ma. and they can get quite hot not to mention dangerous.
S sivankls New Member Jul 24, 2007 #5 To get 1 amp u need a costly capacitor..besides the inherient shock hazards as mentioned by "blueroomelectronics"...Go in for transformer type !!
To get 1 amp u need a costly capacitor..besides the inherient shock hazards as mentioned by "blueroomelectronics"...Go in for transformer type !!