Welcome to our site!

Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

  • Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

SL100... again

Status
Not open for further replies.

fantasymick

New Member
I have searched the forum for this and observed the following...

Datasheet:
**broken link removed**

and from
http://www.electro-tech-online.com/threads/3pdt-off-on-on-is-this-made.1224/

that a replacement could include the: 2SD313, BD139 or BC301

I'm just a high school student who is interested in making the "Automatic Room Light" for an end-of-year project from:

Description:
http://www.electronic-circuits-diagrams.com/lightsimages/lightsckt4.shtml
Circuit Diagram:
**broken link removed**

(Where the *** is electronic circuits diagrams joined by a -)
(Somehow it's not showing...)

I cannot make use of the datasheet and is having a hard time finding the SL100 transistor.

Two locations that are close to me to buy electronic parts are:

http://www.abra-electronics.com/
http://www.sayal.com/

Both of which do not sell the SL100, 2SD313, BD139 or BC301. I would really appreciate it if the experts here can help me find a replacement that is available from the above two sites and works for the "Automatic Room Lights" project.

Many thanks.
 

kinjalgp

Active Member
What load is connected to your transistor?
If it is used for driving a relay, then BC547/BC548 will also work without any problems.
 

lavenatti

Member
The SL100 is a high frequency transistor, this isn't needed to drive a relay. Looks to me like any general purpose NPN will work. (2N3904, 2N2222 etc.)
 

mechie

New Member
Big Project

There is certainly plenty of circuitry to get your teeth into here ...

Yep, any old small or medium power NPN transistor should work.

I can't help thinking there is a *much* simpler circuit to achieve the same results, maybe based around an up/down counter thus eliminating one of the 4017s and all that 'compare' logic after it.
 

fantasymick

New Member
Thx to all the advice. I was able to find a replacement from:

https://www.nteinc.com/

The site has a search engine that especially looks for part replacements. I went out and bought a BD137 and NTE152. Hopefully one of them will work. From the responses, it looks as though they will.

In regards to a simpler design, it's way out of my league. Anyways, it looks more sophisticated this way, maybe I'll get a high mark for it :)

Thx again to all replies.
 
Status
Not open for further replies.

Latest threads

Top