steinar96
Member level 5
I've always found transformers annoyingly expensive relative to other circuit components. They represent a large base cost for cheap low power applications.
I've thought for a long time if a straight off the main line 220V to ~20V SMPS which is of low power (10-30W) could become much cheaper then the more comon rig of 220/~20V transformer and a SMPS working off the 20 Volts since you would essentially save the price of a large iron/torroidal core transformer.
The downside of this is ofcourse that this provides no mains isolation.
Anyone aware of the price differences if there are any to be had with this thought.
I've thought for a long time if a straight off the main line 220V to ~20V SMPS which is of low power (10-30W) could become much cheaper then the more comon rig of 220/~20V transformer and a SMPS working off the 20 Volts since you would essentially save the price of a large iron/torroidal core transformer.
The downside of this is ofcourse that this provides no mains isolation.
Anyone aware of the price differences if there are any to be had with this thought.