Synth-DIY Yahoo! Groups Archives

Thread

H-Bridge

2009-08-24 by u4ia2000

Ok, if you need help ask, right. I've been searching through spec. sheets all day and I'm getting dizzy-- looking for an "H-Bridge" chip to work from an AVR Butterfly that can switch 30 or 30+volts bidirectional DC, non inductive (not a motor), no PWM, very low amperage (0.05 mA to 2 mA), just a standard square wave + and -. Most of the specs. I've read require a minimum of 12 or sometimes 16v for the output. I would like the minimum under 7 or 6v or even down close to zero-- is there such an animal?. Can anyone pick a chip number off the top of their head that would be good for this or point me in the right direction-- I don't read spec. sheets very well? Keep looking, right?

Thanks,
J. Daniel

Re: [AVR-Chat] H-Bridge

2009-08-24 by David VanHorn

How about a pair of op-amps?

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On Mon, Aug 24, 2009 at 7:11 PM, u4ia2000<u4ia2000@yahoo.com> wrote:
> Ok, if you need help ask, right. I've been searching through spec. sheets all day and I'm getting dizzy-- looking for an "H-Bridge" chip to work from an AVR Butterfly that can switch 30 or 30+volts bidirectional DC, non inductive (not a motor), no PWM, very low amperage (0.05 mA to 2 mA), just a standard square wave + and -. Most of the specs. I've read require a minimum of 12 or sometimes 16v for the output. I would like the minimum under 7 or 6v or even down close to zero-- is there such an animal?. Can anyone pick a chip number off the top of their head that would be good for this or point me in the right direction-- I don't read spec. sheets very well? Keep looking, right?
>
> Thanks,
> J. Daniel
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>

Re: [AVR-Chat] H-Bridge

2009-08-25 by dlc

My typical favorite is the 754410, especially if you are low current.

DLC

u4ia2000 wrote:
> Ok, if you need help ask, right. I've been searching through spec. sheets all day and I'm getting dizzy-- looking for an "H-Bridge" chip to work from an AVR Butterfly that can switch 30 or 30+volts bidirectional DC, non inductive (not a motor), no PWM, very low amperage (0.05 mA to 2 mA), just a standard square wave + and -. Most of the specs. I've read require a minimum of 12 or sometimes 16v for the output. I would like the minimum under 7 or 6v or even down close to zero-- is there such an animal?. Can anyone pick a chip number off the top of their head that would be good for this or point me in the right direction-- I don't read spec. sheets very well? Keep looking, right?
> 
> Thanks,
> J. Daniel
> 
> 
> 
> ------------------------------------
> 
> Yahoo! Groups Links
> 
> 
> 

-- 
-------------------------------------------------
Dennis Clark          TTT Enterprises
www.techtoystoday.com
-------------------------------------------------

Re: H-Bridge

2009-08-25 by s.holder123@btinternet.com

Microchip tc4431/32, might be worth looking at.

Regards

--- In AVR-Chat@yahoogroups.com, dlc <dlc@...> wrote:

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>
> My typical favorite is the 754410, especially if you are low current.
> 
> DLC
> 
> u4ia2000 wrote:
> > Ok, if you need help ask, right. I've been searching through spec. sheets all day and I'm getting dizzy-- looking for an "H-Bridge" chip to work from an AVR Butterfly that can switch 30 or 30+volts bidirectional DC, non inductive (not a motor), no PWM, very low amperage (0.05 mA to 2 mA), just a standard square wave + and -. Most of the specs. I've read require a minimum of 12 or sometimes 16v for the output. I would like the minimum under 7 or 6v or even down close to zero-- is there such an animal?. Can anyone pick a chip number off the top of their head that would be good for this or point me in the right direction-- I don't read spec. sheets very well? Keep looking, right?
> > 
> > Thanks,
> > J. Daniel
> > 
> > 
> > 
> > ------------------------------------
> > 
> > Yahoo! Groups Links
> > 
> > 
> > 
> 
> -- 
> -------------------------------------------------
> Dennis Clark          TTT Enterprises
> www.techtoystoday.com
> -------------------------------------------------
>