Search found 8 matches

by billw
Sat Oct 31, 2009 5:26 am
Forum: Circuit Talk
Topic: one shots
Replies: 8
Views: 19619

Re: one shots

Here is the project file
by billw
Fri Oct 30, 2009 2:20 pm
Forum: Circuit Talk
Topic: one shots
Replies: 8
Views: 19619

Re: one shots

Eugene,

How do I upload projects? I can't seem to upload a circuitproject file as an attachment.

Bill
by billw
Fri Oct 30, 2009 8:51 am
Forum: Circuit Talk
Topic: one shots
Replies: 8
Views: 19619

Re: one shots

Here is a circuit for a 4 bit programmable re-trigerable one shot. It can be expanded by adding more timer elements and expanding the NAND gate (see drawing). Each timer element consists of 1 D flip flop, 1 JK flip flop and 1 exclusive NOR gate. 1. Apply the bits to each element (MSB on top) 2. Load...
by billw
Thu Oct 29, 2009 11:41 am
Forum: Discuss LogicCircuit program
Topic: Input pin problem
Replies: 2
Views: 7212

Re: Input pin problem

Hi Eugene,

I tried it again and it worked. Sorry to bother you over a mistake that I must of made.

Thanks,
Bill
by billw
Thu Oct 29, 2009 7:24 am
Forum: Circuit Talk
Topic: Flip Flops
Replies: 2
Views: 11717

Re: flip flops

Here is a d flip flop with preset & clear
DFF.Png
DFF.Png (21.21 KiB) Viewed 12077 times
by billw
Thu Oct 29, 2009 6:42 am
Forum: Discuss LogicCircuit program
Topic: Input pin problem
Replies: 2
Views: 7212

Input pin problem

Thanks for the great program!
I seem to have problems with input pins when I orientate them to the top and bottom. It doesn't seem to make the proper connections to the gates. It works fine when they are on the left. Is there something I am doing wrong?
Thanks,
Bill
by billw
Thu Oct 29, 2009 6:22 am
Forum: Circuit Talk
Topic: one shots
Replies: 8
Views: 19619

Re: one shots

Eugene, Thanks for the response!! I have implemented one-shots using counters. It is a count to n and stop. A positive input trigger clears the counter and starts counting clock pulses until the desired count is reached and it stops and outputs a positive transition. This of course, requires that yo...
by billw
Fri Oct 16, 2009 11:40 am
Forum: Circuit Talk
Topic: one shots
Replies: 8
Views: 19619

one shots

Is there any way to implement a one-shot delay?