tb
At 05:28 PM 11/26/98 -0800, Edward Dinache wrote:
>An easy way would be to get your +15V and -15V supply from two sets of a 9V
>battery connected in series with 2 1.5V batteries. Thus 9+6 equals 15. So,
>for your OPAmp circuit, you need three terminals (wires). A +15V, a -15V and
>a circuit ground (or reference). To achieve that you must connect the two
>15V supplies as follows:
>1. First connect the + of 9V battery to - of 1.5V one. Then connect the
>+ of that battery to the - of the second1.5V battery. From the + of the
>second 1.5V battery you have +15V with respect to the - of the 9V battery.
>In the end you should have two terminals (wires) from this (first) battery
>supply to your circuit. One is from the - of the 9V battery to your circuit,
>which will be called circuit ground, and the second is from the + of the
>second 1.5V battery to your circuit, which would be called +15V.
>2. Now, to put together the 2nd battery supply, you need to follow the
>same exact sequence as in step 1, with a slight alteration. So, after you
>connected the three batteries together, the terminal from the + of the
>second 1.5V battery would be your circuit ground and should be connected to
>your circuit in the same place as the circuit ground from the first battery
>supply. The terminal from the - of the 9V battery would be called -15V.
>3. So, in the end you should have one circuit ground, and two "hot"
>terminals, +15V and -15V. Make sure you don't short any of the two "hot"
>terminals directly to ground. If you do that, your battery supply might
>explode...
>That ought to be simple enough. However if you encounter difficulty, let me
>know, maybe I can explain it better.
>
>Regards, Ed.
>
> -----Original Message-----
> From: Matthew Redmond [mailto:adze@clear.net.nz]
> Sent: Tuesday, November 17, 1998 10:11 PM
> To: keelynet@DallasTexas.net
> Subject: Electronics Query
>
> I am going to be using an op-amp amplification circuit but
>of course I need
> either +5, -5 or +15, -15 to run the one I want. If you can
>tell me how to
> wire one up some batteries to give the above output values
>then can you
> e-mail me.
>
> Thanks
>
> Matthew.
>
>
>
>
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