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I thought it was an electronics discussion forum but OK , I'll bite. Assuming what you say is correct and that you are the self appointed protector of accuracy then how do you explain that the first post you made after mine was an overly wordy sarcastic question pretending that I implied you dim...
Where did I give any design advice? Where was any asked for? I gave a direct answer to the question asked. I was not asked for a technical explanation on how dimming CFL or CCFL was done. Since you don't seem to be a moderator I will just assume you are being pedantic.
You don't - you reduce voltage on the primary of the inverter.
I guess I could have been more clear but I assumed that most people understand that when discussing CCFL,CFL lighting as a lighting system that the discussion includes the ballast/inverter.
Update:
I have located a controller that is virtually ideal for my application.
Output range: 4 - 12vDC
10 watts max:sad: - I need to control the voltage to a 226 watt T.E.C.
Would someone please instruct me on choosing a transistor and how to build a 'daughter board' to increase the...
Sites like Make Magazine or Instructables and are good choices. If you can find a forum specific to the industry your tutorial is for that would be another (probably better) choice.
I suggest you look into photoelectric (optical) smoke detectors. There are 2 main types of these, simple IR/LED units that look like a typical ionization type detector found in homes and beam type detectors that have either a separate emitter/collector or combine both in one unit with a mirror...
That machine can't be more than a year or so old - have you checked if HP might help you under warranty?
I have used a boot cd for this in the past but I can't honestly recall if I ever tried it on a system with an eeprom pw.
Try Hiren's Boot CD (specifically BiosCracker) - it can be found...
Cold cathodes are not only more efficient than hot cathode (CFL) by a factor of 10 or more they are also much simpler/cheaper to dim (as required in an LCD TV).
Chuckey,
Thank you for replying. Just to be clear, what I am hoping to achieve is a circuit that will be closed when the sensor is above ambient temperature and open at or below ambient temperature ( I would expect ambient to range from ~65 - 80 degrees F) - I need the controller to compensate...
Hello everyone! I am attempting to build a thermal controller with the following criteria:
1) Able to match target temp to ambient temp.
2) High power - ~100 watts or greater 12 or 24vDC (12v preferred).
3) Solid state (non-mechanical relay).
The application is cooling electronic components...
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