Thanks Larry, you're a good salesman. I'll be putting a pedal
interface on my next order. Do you get a percentage on those?
At 10:00 PM -0600 6/12/01, J. Larry Hendry wrote:
>For DC and LFO speed type waveforms, you can do these functions with an
>existing 1U MOTM module - the pedal interface. DC / LFO signal input # 1 =
>pedal jack with reversing attenuator +/- 5 on input. Separate input #2 is
>DC / LFO input "MIX" with non-reversing attenuator. Built in bias control =
>+/- 2.5 volts.
>
>For the LFO triangle conversion below - tri LFO signal to pedal jack, adjust
>attenuator to -2.5 to scale wave to 50% and invert. Adjust bias control to
>+2.5 to bias to +5/0.
>
>The drawback is the chip selection in the pedal interface is not AC audio
>frequency friendly. You could build your pedal interface with TL072s
>instead to make it more audio frequency friendly. Send me the spare 1013s.
>:)
>
>So, use # 43 for pedal interface = 2 input mixer with built in bias and one
>of the input attenuators as reversing one non-inverting.
>
>Larry Hendry.
>P.S. Makes a good pedal interface too.
>
>----- Original Message -----
>From: Scott Juskiw <scott@...>
>This is a good idea. I'd also like to see the inputs have +/- so that
>we can both invert, scale, and bias in one go (in that order).
>Something that comes up all too often, for me, is the need to invert
>a triangle, then scale it from +5/-5 to +5/0.
>
>> At 3:44 PM -0800 6/12/01, Thomas Hudson wrote:
>>Another one would I would like to see and should be fairly cheap would
>>be a single width module with a variable DC source and a one or two
>>input DC mixer with bias:
>>
>>Pots: DC Out, In1 Level, In2 level, DC bias (-5/+5)
>>Jacks: DC Out,In1, In2, Mix Out
>>
>>Actually to make it even cheaper version you could leave off the
>>independent
>>DC out, and drop a pot and jack. Of course I guess I've come full circle
>>back to the mixer discussion (sorry Paul). I just find myself needing to
> >bias a lot of waveforms lately.
>
--
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Scott Juskiw
scott@...