Searching \ for 'Driving sensitive gate triacs directly' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/index.htm?key=driving+sensitive
Search entire site for: 'Driving sensitive gate triacs directly'.

Truncated match.
PICList Thread
'Driving sensitive gate triacs directly'
1995\07\28@090937 by Harrison Cooper

flavicon
face
There was some discussion on interfacing with a SSR, but I don't remember
reading how it turned out.

How about this one - since the output current is quite hefty from a PIC
(40 mA if I remember right), can you drive a sensitive gate triac directly ?
Data sheet for a MAC228A would indicate 5mA trigger with a 15mA hold.
Anyone done this before ?  Normally, I use a optocoupler but it would be
nice to eliminate another part.

spam_OUThcooperTakeThisOuTspames.com

1995\07\28@094156 by Reg Neale

flavicon
face
On Jul 28,  7:09am, Harrison Cooper wrote:
|Subject: Driving sensitive gate triacs directly
| There was some discussion on interfacing with a SSR, but I don't remember
| reading how it turned out.
|
| How about this one - since the output current is quite hefty from a PIC
| (40 mA if I remember right), can you drive a sensitive gate triac directly ?
| Data sheet for a MAC228A would indicate 5mA trigger with a 15mA hold.
| Anyone done this before ?  Normally, I use a optocoupler but it would be
| nice to eliminate another part.
|
| .....hcooperKILLspamspam@spam@es.com
|-- End of excerpt from Harrison Cooper

Depends on how vulnerable you are to getting fried. One of the functions
of SSR's is isolation from the line. Sure, you can do what you suggested,
but be aware that your PIC and whatever circuitry is attached will be
connected to potentially lethal power source.


*Reg Neale=nealespamKILLspamee.rochester.edu ....standard disclaimer applies...*
*..."Ignorance is a renewable resource."....P.J. O'Rourke............*

1995\07\28@102224 by Kevin P. Fleming

picon face
At 07:09 AM 7/28/95 -0600, Harrison Cooper wrote:
>There was some discussion on interfacing with a SSR, but I don't remember
>reading how it turned out.
>
>How about this one - since the output current is quite hefty from a PIC
>(40 mA if I remember right), can you drive a sensitive gate triac directly ?
>Data sheet for a MAC228A would indicate 5mA trigger with a 15mA hold.
>Anyone done this before ?  Normally, I use a optocoupler but it would be
>nice to eliminate another part.
>
>.....hcooperKILLspamspam.....es.com
>
>

I thought about this too, but I wanted zero-crossing, and the triac-output
optocouplers are pretty cheap and reliable (and easy to use).

I think I'd rather pay the extra two bucks per triac than risk blowing up my
PIC and all its attached hardware with 115 VAC...
Kevin Fleming, Reliable Networx, Inc.
Phoenix, AZ
Internet: EraseMEkpfhomespam_OUTspamTakeThisOuTprimenet.com


"Please, don't change colors while I'm talking to you."

More... (looser matching)
- Last day of these posts
- In 1995 , 1996 only
- Today
- New search...