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[Brian H]

Many of the X10 Mod sites show how to convert our 120 volt units to 240 volts. Many of the converts are on 50 Hz. I would expect the simple zero crossing types maybe fine. Just longer for a message to be sent.

[Pdozie]

On after thought I decided to return only one order and keep the rest ( both still on the road though  )
I guess I may not be able to test and feedback to Dave as TM751 is not part of the order I retained. Below is the list of the contents in the order I retained:

8 Door/Window Sensor DS10A
2 Security Keychain Remote KR10A
1 Lamp Module LM465
4 Security Surveillance Decal MM024
2 Wireless Motion Sensor MS10A
1 SECURITY/HOME AUTOMATION REMOTE CONTROL PSR01
1 Voice Dialer Security Console SC1200

[Brian H]

The SC1200's power supply will have to be used on a step down transformer. From 220 to 120 volts.
Here are some links for some helpful hints:
http://www.redoak.co.uk/hpx10240v.html
http://www.redoak.co.uk/hpxgenmod.html
Note they show how to add a capacitor from the 120 volt to 220 volt lines to help couple the X10 into the power lines.

The LM465 is also going to need modifications to run on the 220 volts.

[Pdozie]

SPLENDID!!!!!!

Thanks Brian! I will try the transformer-capacitor solution with the SC1200. If it works, it may well be back to business with x10 USA!!

[Brian H]

It may depend on how the SC1200s power supply like to run on 50Hz.
I have no data on the clock function in the SC1200. If it uses the power line frequency as a timing signal. The clock may run 10% slow.

It will be interesting to read of your findings.

[Pdozie]

Please what is your understanding of this:

"However, if a 0.47 microfarad capacitor is placed across the 230V and 115V windings, this allows the X-10 signals to pass backwards and forwards through the auto-transformer"


Does it mean having two of the capacitors, one at the input end (220V) before it feeds the transformer, and the other at the output end before it feeds the appliance?

[Brian H]

The example was for an Autoformer. Where there is one winding. The 220 volts goes across the full winding and the 120 volts comes out the tap about half way from the top.  The neutral of both the 220 volts and the 120 volts are a common connection.

Diagram of an Autoformer on this page.
http://www.redoak.co.uk/hpxgenmod.html

If you get a full transformer where it has a separate 220 volt and 120 volt winding. That will be different and I will have to see if I can find more data.

Also I recommend if you can find one. Get a capacitor rated to be used on an AC power line.

[Pdozie]

Thanks ...

[Pdozie]

Also stumbled on this link... http://www.idobartana.com/hakb/modifying_computer_interface.htm

[Brian H]

Yes basically it is the same information from the other source.
I believe they picked a different value capacitor.