Question

Design a ladder network for a "pulse-stretcher." When IN4 switches ON, OUT3 energizes for 1.5 seconds, then switches OFF. The ON time of IN4 should have no effect on the ON time of OUT 3 (i.e., IN4 could be ON for less than or more than 1.5 seconds without changing the OUT3 ON time).

Answer 1

To design a ladder network for a pulse-stretcher, use a combination of resistors and capacitors. The charging and discharging times can be adjusted by choosing appropriate resistor and capacitor values.

Step-by-step explanation:

To design a ladder network for a pulse-stretcher, we can use a combination of resistors and capacitors. The circuit should be designed such that when IN4 switches ON, OUT3 energizes for 1.5 seconds and then switches OFF. The ON time of IN4 should have no effect on the ON time of OUT3.

To achieve this, we can use a capacitor in parallel with a resistor connected to IN4. When IN4 switches ON, the capacitor starts charging through the resistor. The value of the resistor and capacitor can be chosen to give a charging time constant of 1.5 seconds. Once the capacitor charges up to a certain threshold, OUT3 can be energized. When IN4 switches OFF, the capacitor can discharge through a separate discharge path to reset the circuit.

This ladder network setup ensures that the ON time of IN4 has no effect on the ON time of OUT3. The charging and discharging times can be adjusted by choosing appropriate resistor and capacitor values.