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Re: LM12 lamp module



Hi Jon,

Gate current for BT139 is even lower.... around 25mA comparing with 30mA for BTA10.

You know the IC from LM12 module? There are some pins (7,8,9) I think which can be used to locally dim/bri the module.

Do you know something about this?

Dan
  ----- Original Message -----
  From: Jon Payne
  To: ukha_d@xxxxxxx
  Sent: Tuesday, October 22, 2002 3:30 PM
  Subject: Re: [ukha_d] LM12 lamp module


  Hi Dan,
  It will probably be ok as long as the minimum gate current is the same as the
  original.
  jon
  ----- Original Message -----
  From: "Dan" <dtoma@xxxxxxx>
  To: <ukha_d@xxxxxxx>
  Sent: Tuesday, October 22, 2002 1:18 PM
  Subject: Re: [ukha_d] LM12 lamp module


  > Hi Pete,
  >
  > What application do you use to dim/bri-it?
  >
  > Another question... someone have tried to change the included triac
  BTA10-400C (10A/400V) with a BT139/800 (12A/800) one in order to increase the
  maximum power? I need to operate a set of 15x50W halogen spots (750W).
  >
  > This modification is enough or more changes in the schematic are necessary?
  >
  > Thank you,
  > Dan



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