What is a D Latch Flip Flop Circuit for a Control Relay?

In summary, the individual is seeking help with a Control Relay circuit and has been researching D latch and Flip Flop logic. They are struggling to apply this knowledge to using relays and are in need of a quick ladder diagram to save time. The main goal is to have the relay receive a signal of "1" from the flip flop to close the contactor and turn on the light, and a signal of "0" to open the contactor and turn off the light.
  • #1
codyrodgers
1
0
I need help! I'm really close to figuring out this Control Relay circuit but I'm running out of time.

Circuit Description: Plug in the circuit and the light turns on. Press the momentary button and the
light goes off. Press the momentary button again, and the light turns back on after one second.
Press the button again and the light goes back off. Repeat...

I've been reading on the D latch and Flip Flop logic a bunch, but I can't figure out how to apply it to
using relays! I know I'm missing something little can somebody help me PLEASE! If somebody could
draw a quick ladder diagram and upload a picture it would save lives. My co-workers and I are
stuck and out of time.
 
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  • #2
Doesn't a relay just fire a contactor? (takes a normally open switch and closes it). If the relay gets a signal of "1" from the flip flop, it shoud close the contactor and turn on light.

When relay gets a "0" from flip flop it should open contactor and turn light off.

As far as the "quick" ladder diagram...that's up to you!
 

1. What is a D latch flip flop circuit?

A D latch flip flop circuit is a type of digital logic circuit that is used to store one bit of information. It consists of two inputs, a data input (D) and a clock input (CLK), and two outputs, the latch output (Q) and the inverted latch output (Q̅). The circuit operates by storing the value of the data input when the clock input is triggered.

2. How does a D latch flip flop circuit work?

The D latch flip flop circuit works by using two cross-coupled NOR gates. When the clock input is triggered, the first NOR gate evaluates the data input and the inverted latch output, while the second NOR gate evaluates the data input and the latch output. The outputs of the two NOR gates are fed back into each other, creating a latch effect that holds the input value until the clock input is triggered again.

3. What is the difference between a D latch and a D flip flop?

A D latch and a D flip flop are two different types of circuits that are used to store one bit of information. The main difference between them is that a D flip flop has an additional clock input, while a D latch does not. This means that a D flip flop can only store the input value when the clock input is triggered, while a D latch can store the value continuously until the clock input is triggered again.

4. What are the advantages of using a D latch flip flop circuit?

One advantage of using a D latch flip flop circuit is that it can store a single bit of information without the need for additional clock signals. This makes it simpler and more efficient compared to other types of circuits. Additionally, D latch flip flop circuits can be easily cascaded to create larger memory units, making them useful for storing larger amounts of data.

5. In what applications are D latch flip flop circuits commonly used?

D latch flip flop circuits are commonly used in digital systems where the ability to store and manipulate data is necessary. Some common applications include memory units, registers, and sequential logic circuits. They are also used in microprocessors, computer memory, and other digital devices that require a simple and efficient way to store data.

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