Suggestions finding an alternative to a relay pulse signal

Discussion in 'General Electronics Chat' started by nar, Oct 29, 2010.

  1. nar

    Thread Starter New Member

    Dec 1, 2008
    7
    0
    Hi, I’ve been using a reed-relay in a circuit, wired as a vibrator. I chose the reed-type relay for the small size & cheaper price. I’ve been looking for a "solid-state" replacement for the relay with the same small size & price that will put out a pulse (on/off) signal of 1 amp or less with a 12 volt battery. The pulse signal is being used to constantly turn on & off a transformer. This isn’t that critical but maybe about .005 sec between pulses.​

    Ideally I’m looking for something the size & looks of a resistor, with 2 leads, an in & out; a single unit that will work constantly like an on/off switch to whatever it is hooked to. ​

    I’ve been all over in my searches, there’s so much out there & I’m not really sure what name or key words to search for? ​

    555 Oscillator? - looks more complicated than what I need, lots of parts to order & assemble to make it work.

    Pulse width modulator?​

    IGBT?​

    Mosfets?​

    I’ve pretty limited in electronics but am learning. Thanks for your time & replies are appreciated.​

    -Nick​
     
    Last edited: Oct 29, 2010
  2. nar

    Thread Starter New Member

    Dec 1, 2008
    7
    0
    Vertical MOSFETs are designed for switching applications, so they are only used in On or Off states. Are they able to produce a pulse signal like described above?

    I've also been looking at the UJT relexation oscillator. One site lists down falls about it, I seen the pulse it produces is really narrow. The circuit looks simple though.

    I was also thinking about those electronic "shocking" pens they had out a few years ago. Did they have a buzzer circuit or a crystal in them? I haven't been able to find a good diagram of them.

    thanks & any sugguestions or guidance is appreciated,

    -Nick​
     
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