Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Convert a train of pulse into a single pulse

Status
Not open for further replies.
W

watertreader

Full Member level 3
Joined
Dec 2, 2005
Messages
174
Helped
4
Reputation
8
Reaction score
0
Trophy points
1,296
Activity points
2,560
Hi,

Just wonder if there is anyway to convert a series of train pulse of equal time period into one single pulse of the same time width electrically?

43_1199887619.jpg


Thanks!
 

Very easily, use a binary counter. You can create these from flip flops or just buy one. Google it and you'll get more than enough info. What you're actually doing is dividing a clock (clock division - which is another term to look for)
 

Only if you know number of pulses in series ahead of time. Otherwise, you will have to implement crystall ball into your circuit so it's able to predict future (when the train will stop).
 

You can use a retriggerable one-shot, whose period is somewhat longer than that of the pulses. Thus, each pulse will re-trigger the one-shot. After the last pulse, however, the one-shot will not be triggered and once it times out its output pulse will end. So that is one pulse for no matter how many input pulses.
Check out the 555 datasheet, I am almost certain there is an example of such circuit.

The only problem is if you really need the output pulse to end EXACTLY on the falling edge of the last pulse. The circuit I am describing will ends its output pulse after one period (its own period) after the last rising edge received (after the rising edge of the last pulse)
 

hi my questions to be similar to this.

how can one generate a 25ns single pulse?

thanks
 

See the Link shown below
All about 555 timer
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top