| Modifying the LM465 Lamp Module
These instructions are based on Hans Attersjö's
Home page. I have not attempted this modification and I accept no
responsibility for the effects of anyone making these modifications.
You follow these instructions at your own risk.
This information comes from Marco de Goede (goede@dds.nl) in Holland
and I have never done it myself. He probably applied my general
modification rules.
- Change C1 from 0.68uF/250V to 0.33uF/400V.
- Change R1 from 100 Ohm/0.5W to 220 Ohm/1W.
- Change R2 from 330K/0.25W to 330k/0.5W.
- Change the 130V MOV to a 250V MOV.
- Use adapters for the connectors on the input and on the output.
- Comments from Hans:
I think that you should also change R5, the other 330k resistor and R10 a
100k resistor going to the triac to 1/2W if they are 1/4W.
Also, as far as I know, these modules use a triac called BTA10-400CW
which is a 400V version. This is quite OK for 220 but very close to the
limit if you have 240V (340V peak/peak). If you have 240V, it would be
safer to use a 600V triac. But in a "clean" environment it would
probably work.
Triac short form data:
Type BTA10-400C
BTA10-600CW
Umax 400V
600V
Imax
10A
10A
Vgt
1.5V
1.5V
Igt
35mA
35mA
Ih
35mA
35mA
Case TO220, insulated tab
I show the data also for the 600V version because I have found that they
use it in newer wall switches (WS467) and they might therefore perhaps
also use it in the lamp module.
Mun Wai from Malaysia has confirmed these modifications work.
J Cubas from Spain confirmed in September
2005 that the design of the LM465 has changed, and that his modifications
did not work.
If you attempt these modifications, please let me
know your results, and read the warning on the X-10
240 volt modifications page. |
Redoak
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