Re: TI-H: Headphones

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: Headphones
From: Grant Stockly <gussie@alaska.net>
Date: Fri, 19 Feb 1999 07:53:28 -0900
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In-Reply-To: <3.0.5.32.19990218190955.007a2380@mail.netdoor.com>
References: <36CCAEDB.563A8C43@electricstoat.com> <v04020a00b2f266ca6a40@[24.237.1.113]>
Reply-To: ti-hardware@lists.ticalc.org


Use a zener diode and an adjustable resistor.  That will create a
regulation circut.


>You would use a zener diode that only allows current to pass after a
>certain point, but you'd have to worry about the exact point where it needs
>to pass, and the volume might not be carried in the voltage but in the
>amplitude. Just mumbling...
>
>-Scott
>"An intellectual is a person educated beyond their intelligence."
>	Arthur C. Clark
>
>At 07:22 PM 2/18/99 -0500, you wrote:
>>
>>But, I mean, say I wanted to power a lightbulb based on how loud the stuff
>>coming out of the walkman is, or if I wanted to have something activate based
>>on if the volume is past than a certain point.  What would I do?
>>
>>Grant Stockly wrote:
>>
>>> Cheap 1bit dac.
>>>
>>> >Does anyone know what's going on with headphones?  What kind of current,
>>> >and charge is flowing through each wire?
>>
>>
>>

References:

Re: TI-H: Headphones

From: Jon Mullen <mullen@electricstoat.com>

Re: TI-H: Headphones

From: Grant Stockly <gussie@alaska.net>

Re: TI-H: Headphones

From: "David (Scott)" <hul@netdoor.com>