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From: "Tom Faloon"
Subject: Re: Buzzer/Inductor question
Date: Mon, 7 Oct 2002 17:35:10 +0100
NNTP-Posting-Date: Mon, 7 Oct 2002 17:31:54 +0000 (UTC)
X-Newsreader: Microsoft Outlook Express 5.00.2615.200
You are right. This circuit does not make sense.
The 10uF to Vcc would kill any signal fed through the 0.1uF.
Is the circuit given in a document which is available on the web ?
Daniel M wrote in message
> I have a question about a buzzer circuit i am working on. I have a CPU
> has a buzzer output to drive a simple buzzer. I dont understand the sample
> circuit and wanted to know if someone can explain it....
> It runs from the CPU output, through a .1uf cap to a buzzer/inductor. The
> other side of the buzzer is tied to ground. The buzzer side of the cap has
> 10k pulldown to ground and a 10uf cap to VCC.
> Ok i can possibly see the series cap and pulldown being sometime of RC
> filter for the buzzer but the cap to VCC has got me stumpped. Am i wrong
> this? what is the other cap for? any explinations? Thanks.
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