Hi! We have an unused Toshiba Microwave circa 1980's. It was purchased in the US. Anyway I was wondering if its possible to have it converted from 110v to 220v without any issues. Using a large external transformer would be my last resort.
Re: Microwave Oven conversion from 110v to 220v
As long as you bring it to a reputable technician that would give you a reasonable length of warranty, there would be no issues. If I'm in your shoes, using a transformer would be safer and practical since converting it from 100V to 220V would require numerous parts and expensive ones like the internal transformer and the like.
Re: Microwave Oven conversion from 110v to 220v
Why not convert your convenience outlet to 110V. It's very simple.
Re: Microwave Oven conversion from 110v to 220v
1980s microwave?
These ovens have come a long way since then. Lots of cheap but good models. Depending on the size of transformer you would need, may even be cheaper than the transformer. If your Toshiba is just a small, no frills, model, I'd just get a new oven.
Otherwise, I'd go for a step-down.
While we're on this topic, I once brought home a microwave from Japan. Voltage is 100V at 50Hz. Managed a stepdown but the frequency is a b*tch. The oven's timer as it turned out is synched to the voltage frequency so I had to adjust cooking time.
Re: Microwave Oven conversion from 110v to 220v
Why not convert your convenience outlet to 110V. It's very simple.
can you show us how sir?
Re: Microwave Oven conversion from 110v to 220v
typically a 220v outlet contains 2 live wires. some with grounding wire.
All you need to do is disconnect the one live wire. Sa Meralco area pwd eto. I am not sure sa mga probinsiya. Ang hinde ko din sure ay kung allowed eto ng Meralco or kung meron laws about this.
cheers
Re: Microwave Oven conversion from 110v to 220v
Correct me if wrong but technically, to get reliable/stable 110 V, the center tap of the utility's distribution transformer (220 V side) needs to be supplied to the customer's panel, which means three incoming wires. I don't think 3-wire single-phase service is usual in Metro Manila or the Philippines. Another possibility is the utility earth-grounds their center tap, which I don't think is common practice. Even if it did, the resulting voltage may not be stable due to unpredictable earth resistance between panel ground and grounded center tap. In default case of ungrounded center tap, if you just do hot to neutral/ground, that would be the height of unpredictability, no?
I think some places like Baguio may be an exception (?) for historical reasons. Anyone know current practice there?
If 110 V were easy (never mind allowed), there wouldn't be a market for stepdown transformers, would there?
Re: Microwave Oven conversion from 110v to 220v
kaya nga sinabi ko kung allowed eto ng Meralco. halimbawa sa area namin, walang ground wire. but
power line going to transformer of Meralco is one live wire only, then ang out niya ay 2 live wire. Well ang house ko meron local grounding.
I know a place where they are using 110v outlet with one wire.
I reckon, transformer are there for ease and convenience of the user.
Iba nga ang system sa probinsiya like Baguio. Sa mother house namin duon until now 110v.
somebody who wants to experiment on this?
cheers
