Isolating Transformer
October 6, 2018
This is my 600 VA transformer for secure works with 230V AC.
The aluminum case has 38 cm x 27 cm (15 x 11 inch).
The toroidal transformer is clearly visible.
Pros:
- Very less magnetic leakage flux.
- No air gap -> No "brummm" sound -> No magnetic resistance -> Small "no load current"
- Looks good.
Cons:
- More difficult coil wrapping than for an EI transformer.
Known issues:
- The coil has no shielding.
- Primary and secondary coil are maybe not in separated winding chambers.
- The capacity is not known.
Etc.:
- The black cable on the left is the 230V input.
- The circuit breaker is for turning on/off and it has a built-in fuse for max. 10 A.
- I use two junction boxes. As a result, a contact is impossible.
- The right box has a 3 A fuse inside.
- Two output sockets.