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DPRG: BOUNCE dprglist@dprg.org: Non-member submission from [Christopher Fairbairn <lgcl01@es.co.nz>]

Subject: DPRG: BOUNCE dprglist@dprg.org: Non-member submission from [Christopher Fairbairn <lgcl01@es.co.nz>]
From: Jim Brown jimbrown at airmail.net
Date: Sat Jan 24 20:59:45 CST 1998

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>Subject: BOUNCE dprglist at dprg.org:    Non-member submission from
[Christopher Fairbairn <lgcl01 at es.co.nz>]   
>
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>To: DPRG <dprglist at dprg.org>,
>        seattle robotics society <srs at seattlerobotics.org>
>From: Christopher Fairbairn <lgcl01 at es.co.nz>
>Subject: Solar Power + Motor Control
>
>Hi,
>
>I'm sure this circuit has been seen by most of you sometime, but what I am
>wondering is how much current would the motors be able to draw from it?
>
>Solar-Engine:
>
>          |-------------------O-------------O-----------------|              
>          |                   |             |                 |              
>          |               |-------|         |                 |              
>          |               <  mot. >         |               + |              
>          |               |-------|         |                ---             
>          p      2.2k-10k     |           + |              -------           
>           n|--O---/\/\/------O           ----- >2200uF      ---    >2v solar
>          P    |              |           ----- capacitor  -------      cell.
>          |    |              N           - |                ---             
>          |----|------------|p              |              -------           
>               |              n             |               - |              
>              /-/             |             |                 |              
>               ^ Zener        |             |                 |              
>               | mc4742       |             |                 |              
>               |--------------O-------------O-----------------|              
>
>An excert from its original document: "For transistors, 3904s and 3906s are
>typical, but for higher power designs, the NPN must be replaced with
>something like cascaded 2n2222s, 
>or high gain power transistors, like TIP 31s."
>
>I am thinking of including it in a simple robot I am building but I'm
>thinking I'll have to replace the present motors with motors which suck less
>current from this circuit.
>
>Thanks,
>Christopher Fairbairn
>
>-----------------------------------------------
>My Web page URL is HTTP://www.es.co.nz/~lgcl01/
>
>Real Name : Christopher Fairbairn             Invercargill, New Zealand
>Email Address : lgcl01 at es.co.nz or if that fails Christopher at computer4u.com
>Phone Number : +64 3 217 4824
>ICBM  : Lat Deg -41 Min -15 Long Deg -174 Min -45
>
>
>
>
>
>
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