Solved

Digital/analog ic switch to choose between capacitors

Posted on 2010-11-22
3
640 Views
Last Modified: 2012-05-10
I have a circuit that has several different capacitors in it that I am currently using SP3T switch to switch between the capacitors.  They are in a 555 timer circuit and the various capacitors change the output according to which capacitor is connected.  I have 3 non-polarized on a switch and 3 polarized on another switch.  What I want to do is eliminate the manual switches and replace them with an ic switch so I can choose which cap is connected to the circuit using a micro.  I'm not sure what kind of ic would be appropriate for this type of application.  I found this ic TS5A3357 I am thinking about getting and trying.  I would like to know if anyone has a suggestion or can tell me if the ic will work.  I'm sure I could use reed relays for this, but I would rather use an ic switch if possible.  I attached an example circuit.  Thanks for any help.  
excirc.bmp
0
Comment
Question by:deer22
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 27

Accepted Solution

by:
d-glitch earned 500 total points
ID: 34191042
The TS5A3357 is fine if you are using the 555 with a 5V power supply.

     http://focus.ti.com/lit/ds/symlink/ts5a3357.pdf


You could also use a CD4016 in you want to run the 555 at higher voltages (up to 15V).
With the 4016, you get four switches in a 16-pin DIP.
0
 
LVL 27

Expert Comment

by:d-glitch
ID: 34191067
Data sheet for the 4016:

     http://www.fairchildsemi.com/ds/CD/CD4016BC.pdf
0
 
LVL 3

Author Comment

by:deer22
ID: 34191379
Thanks for the quick response.  i was thinking something like the 4066 or 4016 would also work.
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Phishing is at the top of most security top 10 efforts you should be pursuing in 2016 and beyond. If you don't have phishing incorporated into your Security Awareness Program yet, now is the time. Phishers, and the scams they use, are only going to …
This story has been written with permission from the scammed victim, a valued client of mine – identity protected by request.
Saved searches can save you time by quickly referencing commonly searched terms on any topic. Whether you are looking for questions you can answer or hoping to learn about a specific issue, a saved search can help you get the most out of your time o…
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below. https://filedb.experts-exchange.com/incoming/2017/03_w12/1151775/Permutations.txt https://filedb.experts-exchange.com/incoming/201…

734 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question