Print detail report of components

[PaddyCymru]

Say I need to select a component (eg SCR) of required characteristics (VDRM, VGT, IGT,IH etc).

One can view and/or print a "Detail Report" for a selected component (say SCR 2N2579)- however this requires scrolling through each SCR, and viewing the Detail Report individually.  Is there any way of viewing and/or printing the "Detail Reports" for all components in a category such as all SCRs?

Thanks

Paddy

[lacy]

Unfortunately, I have not found a way of doing this. This would be a good feature to add to Multisim as it would be handly to have a hard copy of the component parameters especially if you can't find your exact part in the database. This would allow you to compare your part parameters with those in the database and select one in the database that comes fairly close to your component for simulating.

[PaddyCymru]

Thanks, Lacy - didn't think so, but I thought it worth asking.

The reason is a curiosity with at least one SCR.  The BT145_500R  "Detail" and data sheets indicate its VDRM (Breakover) as 500V.  I made a ciricuit using it, operating onvoltages over 100V 50Hz, but the SCR was "on" all the time no matter what I did with the controls & gate circuit.

Cutting to the chase, I set the BT145_500 SCR on a DC supply with gate floating shorted to cathode.  Increasing DV Volts step-by-step I found breakover occurred at 20V.

At 19.99V, no conduction - 1.999mV shown across load.; at 20V conduction at breakdown, with 19.302V across the load.
<Unless I'm missing something, of course 🙂 >

(See diagram)

Thanks
Paddy

[PaddyCymru]

Ooops - cuppla typos!

"gate floating shorted to cathode " should be "gate floating, then shorted to cathode"

"Increasing DV Volts" should be "Increasing DC Volts"

Paddy

 

[lacy]

If you look in the database at the lower right box you will find that there are actually 2 models for this particular part. The second one has a -2 at the very end of the part number. This one doesn't break over at 20V. Try this one and see if it meets your expectations.

I tried the first one and you are correct that it breaks over at 20V. I tried the second one and ran the voltage above 500VDC and it didn't break over until I got to 800V and then it broke over..

It is my belief that all the component models in Multisim need to be scrutiized and updated as need be. There seems to be a bunch of inconsistencies with them that need ironed out.

[PaddyCymru]

Thanks again Lacy!  I'll have a closer look.  I thought I was going nuts!

Paddy