Program mable T im e r. CD Programmable Timer. General Description. The CDBC Programmable Timer is designed with a. stage binary counter. said circuitry and specifications. Page 7. This datasheet has been downloaded from: Datasheets for electronic components. Nexperia B.V. All rights reserved. HEFB. All information provided in this document is subject to legal disclaimers. Product data sheet.

Author: Mazugar Tygolar
Country: Mozambique
Language: English (Spanish)
Genre: History
Published (Last): 24 June 2005
Pages: 339
PDF File Size: 1.6 Mb
ePub File Size: 13.28 Mb
ISBN: 150-2-44381-342-1
Downloads: 81945
Price: Free* [*Free Regsitration Required]
Uploader: Akinosida

Not for general ‘modding my PC’ etc. Even a utube video!

Connecting it to VCC makes Q high after reset. It seems that this may be what I have to do. Now I am glad I didn’t because I posted it to help out people like you. The output relay has been open, and now shuts causing the light to turn on.

Amplex, You could still use this circuit. Equating complex number interms of the other 6.

Log in or sign up in seconds. Last edited by Analog Ground; 25th November at Also for advice on electronic component specs pinout, equivalents, timing, signal levels etc. Use of this site constitutes acceptance of our User Agreement and Privacy Policy.

OK, go right ahead; you ARE ‘troubleshooting’! First, check out our list of national and global suppliers. Do you have any recommended readings in the matter? Things get slightly more tricky if you want the delay functions. High voltages are potentially dangerous. Extra rules apply to questions on vehicle electronics – please read before posting. I’m trying to understand the behaviour and I’d really appreciate your help! Losses in inductor of a boost converter 9. What is this Identifying an electronic component in an electronic assembly.


You must categorize your question by clicking the ” add tag ” flair button after posting it.

CD 데이터시트(PDF) – National Semiconductor (TI)

And there seems no easy way to ask a question about the product. Help with circuit design: Dec 242: It’s hard to trace through that board.

Is it a modular system such as: Digital multimeter appears to have measured voltages lower than expected. Long time delay using timer 6.

CD4541 PDF Datasheet浏览和下载

Out of all that work I only see one omission, The 10K pullup resistor for Q3 is missing. Then connect your light and power source in series with the NC and Common contact on the 3 conductor terminal. Maybe setting something else to low?

Household electrical wiring, connectors and fittings: CDB’s auto reset functionality consumes extra current and also may not work properly at 5v supply. The base is always floating not great either. On topic questions only – see Rule 1. You stated “Q output of the CD shows connected to Vcc shorting the output “. Rontierra, as you said “It’s hard to trace through that board” I spent hours reverse engineering the board and decided to post it to be nice. This results in the board having power when your NC alarm relay is in normal mode.

What is the function of TR1 in this circuit 3. Please check all tag descriptions before choosing one. Heat sinks, Part 2: I have been trying to figure out how to operate this relay model FC http: Commercial buying, selling, consulting jobs: All I see are whiners who want everything handed to them so they don’t have to think or learn and now an inconsiderate person who overstates a problem on the board and makes a real obvious error not even getting his criticism right.


Parts First, check out our list of national and global suppliers.

Here is the link for the datasheet of CDBC. No generic ‘which is best’ and ‘where to buy’-type questions please. Want to add to the discussion? No one is going to copy the board as you can’t even buy datasjeet parts for what they sell the completed boards for with shipping! Electronic musical instruments design and repair: Submit a new text post.

AskElectronics subscribe unsubscribe 44, readers users here now A cd451 for practical electronic engineering questions: Input port and input output port declaration in top module 2. They may give the voltage but not the current, or where you need to know the size, that’s omitted from the description. PV charger battery circuit 4. You should be able to connect cd451 NC alarm relay in series with 12v power and VCC on the 2 conductor terminal.