Hi, I would like to ask if anyone know a circuit or an IC that has the following characteristic.
single input -- single output
The output should only be triggered by a positive (1) input and will not change even if the input changed it state to 0. But when the input changed in state to 1 again, the output should change in state.
I would like to implement this on my design in a sequential light.
TIA
-vicebay
yes., they call it a flip flop. A D type will work with its DATA input connected to an out. a RS, or JK also.. the output will be a logic 5 or what ever depending on what family of logic chip you use. you most likely want to use something like a TTL, HC or CMOS into a transistor/ a HexFet works well for this.
vicebay wrote:
Here's a circuit using Jamie's suggested approach:
-- Terry Pinnell Hobbyist, West Sussex, UK
"vicebay" schreef in bericht news: snipped-for-privacy@posting.google.com...
The circuit you describe is known as a divide by two circuit. It's a part of almost all counters but can be made easily out of a single flipflop. One of the oldest and wellknown is the 74LS74. Although this days a CMOS successor like a CD4013B may be a better choice. Just connect the inverted output of the flipflop - /Q or an "overscored" Q - to its D-input. Then the Clock input of the flipflop is your input and the Q output of the flipflop is your output. Hope you have the skills to build your sequential light.
petrus bitbyter
-- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.778 / Virus Database: 525 - Release Date: 15-10-2004
But you've got the input connected to the Q output. That'll let the magic smoke out.
I assume you meant for the input to go to the clock pin in the middle?
"Terry Pinnell" skrev i melding
- cut -
And this is an alternative:
.---------------------. | | | | Output | .--o--. | .-----. | .-----|J S Q|-----o--------o | G | | | -|> | __ __ |_-_-_|----------o---)-----|K R Q|o ---. __ __ __ | | | '--o--' | '-----'Input | | | | '-----------------' (created by AACircuit v1.28 beta 10/06/04
Eh, of course. I was a little bit fast here.
ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.