Re: Looking to Cross ref a Diac & Triac set

I have a 1979 mot catalog that does not list the MAC2-4 ----I have looked in
a 1981 D.A.T.A. BOOK with no results. The lowest numbers for the MAC is
MAC15-4.
Ray


"Franc Zabkar" <fzabkar@xxxxxxxxxxxxxxxxx> wrote in message
news:7cfb23h7trh8ftqg192umadeqqaoc3sdu0@xxxxxxxxxx
On Tue, 17 Apr 2007 20:50:12 GMT, Tim <tim@xxxxxxx> put finger to
keyboard and composed:

Hello again, I have a circuit for an electronic Variac that uses a Diac
and Triac to control the output. It looks like a glorified dimmer
circuit. Anyways it uses part # MAC2-4 for the triac and MPT-28 for the
trigger diode (diac). I haven't been able to cross reference these
puppies on the net. I hav checked the usual sources, but came up empty.

Any help would be appreciated.

Thanks,

- Tim -

MPT-28 is a 28V diac:
http://www.nteinc.com/specs/6400to6499/pdf/nte6407.pdf

I don't see a MAC2-4 in either my 1984 Motorola catalogue or my NTE
1990-91 catalogue, but the "-4" appears to refer to a 200V device.
FWIW, the MAC20-4 is a 200V, 15A triac.

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.


.

Relevant Pages

  • Re: Ansteuereinheit =?UTF-8?B?ZsO8ciBNT1NGRVRz?=
    ... So stell ich mir das vor: Ein Diac ist ein offener Schalter. ... Triac schaltet nicht. ... Triac hängt an dem Spannungsteiler 180 Ohm zu Last. ... seien 0V), dann fließt erstmal aller Strom durchs Gate, Vorwiderstand ...
    (de.sci.electronics)
  • Re: Konventionelle Dimmerschaltung
    ... Die Spannung am Widerstand eilt der Spannung am Triac vorraus. ... dort (und somit auch am Diac) gerade 33V erreicht, ...
    (de.sci.electronics)
  • Re: Light output of dimmed lamps
    ... >> And a phase shift cap and a diac in series with the pot. ... Pot and triac alone can sometimes make an unreliable one variable from ... The usual dimmer also has a capacitor and a diac. ...
    (alt.home.repair)
  • Konventionelle Dimmerschaltung
    ... Sie besteht lediglich aus Poti, ... Kondensator, Diac und Triac und der Last, das Ganze an 230V AC. ... fast die ganze Spannung fällt am Diac ...
    (de.sci.electronics)
  • Re: Need Triac
    ... On Thu, 17 Jun 2004 16:19:47 GMT, Bill Jeffrey ... >The ST2 data sheet on the same site ... >where the ST2 is a triac, with three leads and a tab to rivet it down. ... >> They call this item a Diac. ...
    (sci.electronics.repair)
Loading