Help: Double Beeper Circuit

[Darrin]

Hi,
I am looking for a Beeper Circuit (using a Piezo Buzzer/Sounder) which when
triggered should produce two beeps (pip-pip) every 5 seconds. Will prefer a
circuit using dual-timer 556 or CMOS/ TTL logic gates. Any help
appreciated - Tks

 

[Terry Pinnell]

"Darrin" <darrin_2000au@yahoo.com> wrote:

Hi,
I am looking for a Beeper Circuit (using a Piezo Buzzer/Sounder) which when
triggered should produce two beeps (pip-pip) every 5 seconds. Will prefer a
circuit using dual-timer 556 or CMOS/ TTL logic gates. Any help
appreciated - Tks

See my reply in sed, requesting fuller specification.

--
Terry Pinnell
Hobbyist, West Sussex, UK

 

[CFoley1064]

Subject: Help: Double Beeper Circuit
From: "Darrin" darrin_2000au@yahoo.com
Date: 4/29/2004 6:43 AM Central Standard Time
Message-id: <4090ea78@dnews.tpgi.com.au

Hi,
I am looking for a Beeper Circuit (using a Piezo Buzzer/Sounder) which when
triggered should produce two beeps (pip-pip) every 5 seconds. Will prefer a
circuit using dual-timer 556 or CMOS/ TTL logic gates. Any help
appreciated - Tks

This might fill the bill (view in fixed font or M$ Notepad):

Pip Pip Circuit
VCC VCC
+ +
| | VCC VCC VCC
.-. o---. + + +
| | 8| 4| 16| 14| |
220K| | .--o---o--. .---------o-----o-----. |
'-' | | | Vdd CLK | |
| 7| |3 13| | ---.01uF
o----o o------oCLKEN 4017 | ---
| | | | | |
.-. | | | "1""3" Vss RST| |
| | 6| 555 | '---o--o------o-----o-' |
220K| |.--o | 2| 7| 8| 15| | VCC
'-'| | | | | | '-----o +
| | 2| | 2 X 1N914V V | | |
o-o--o | - - | .-. | .---|
| '-o-----o-' | | === 10K| | '--| |
| 1| 5| | | GND | | .--| |
| | | | | '-' | '---|
1uF --- | || | o--' | |
--- o-||--' | === |
| | || | GND |
| | .01uF | || ___ |/
=== === '--------||-------|___|-o--| 2N3904/
GND GND | || 22K | |> 2N4401
.-. C (see text) .-. |
| | | | |
33K | | 22K| | ===
'-' '-' GND
| |
=== ===
GND GND


created by Andy´s ASCII-Circuit v1.24.140803 Beta www.tech-chat.de

If you can live with two half-second pips, skip the 33K resistor and the cap C,
and just wire directly from the diodes to the transistor 22K resistors. If
that's too long, start with an 0.47 uF cap, and go up or down from there
depending on how long you want your "pip" to be.

If this doesn't do it, you might want to give a better description of your
requirements.

Good luck
Chris