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:
"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
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.
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