Shop OBEX P1 Docs P2 Docs Learn Events
Current protection. transistors? — Parallax Forums

Current protection. transistors?

ArchiverArchiver Posts: 46,084
edited 2000-08-20 11:26 in General Discussion
hi i am new with the basic stamp. I have a bs2/sx stamp. I can input
and ouput from it at TTL level. I want to be able to hook up
starters proxes and other type industrial equipment. do you have any
suggestions on current protection. I know the chip is good for only
50mA per 8 pins. If anyone knows of a certain type of transistor or
maybe Solid State relays would work. I appreciate your help.
thanks, mike

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2000-08-20 00:21
    Hi, I have always used darlington transistor arrays to control high curent
    devices such as relays and motors with my BS2. I use ULN2803A chips.
    http://jameco.com has them. Jameco part # 34315.

    Original Message
    From: <russell1@p...>
    To: <basicstamps@egroups.com>
    Sent: Saturday, August 19, 2000 2:48 PM
    Subject: [noparse][[/noparse]basicstamps] Current protection. transistors?


    > hi i am new with the basic stamp. I have a bs2/sx stamp. I can input
    > and ouput from it at TTL level. I want to be able to hook up
    > starters proxes and other type industrial equipment. do you have any
    > suggestions on current protection. I know the chip is good for only
    > 50mA per 8 pins. If anyone knows of a certain type of transistor or
    > maybe Solid State relays would work. I appreciate your help.
    > thanks, mike
    >
    >
    >
    >
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2000-08-20 00:31
    ULN2003 also works I think.

    Original Message
    From: <russell1@p...>
    To: <basicstamps@egroups.com>
    Sent: Saturday, August 19, 2000 2:48 PM
    Subject: [noparse][[/noparse]basicstamps] Current protection. transistors?


    > hi i am new with the basic stamp. I have a bs2/sx stamp. I can input
    > and ouput from it at TTL level. I want to be able to hook up
    > starters proxes and other type industrial equipment. do you have any
    > suggestions on current protection. I know the chip is good for only
    > 50mA per 8 pins. If anyone knows of a certain type of transistor or
    > maybe Solid State relays would work. I appreciate your help.
    > thanks, mike
    >
    >
    >
    >
    >
    >
  • ArchiverArchiver Posts: 46,084
    edited 2000-08-20 11:26
    hi guys.....for the uln2803 you should try mouser electronics they cost 43
    cents each
Sign In or Register to comment.