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how to make a circut which follows following conditions. 1) when battery voltage...
flux2002

flux2002

@copilot how to make a circut which follows following conditions. 1) when battery voltage is greter than 60 volts then blink red led with frequncy of 2 hz. 2) when voltage is less than 60 volts then turn of red led and turn on green led continuasly. And this all circut will be non - programable.
2y

copilot

To create a non-programmable circuit that meets your specifications, we can use comparators, LEDs, a stable multivibrator for blinking, and some additional components for voltage level detection. Here's a general approach:
Components Required:
  1. Voltage Comparator: LM311 or similar.
  2. Timer IC for Blinking LED: 555 Timer IC in Astable Mode for 2 Hz blinking frequency.
  3. Zener Diode: To create a reference voltage, e.g., a zener diode with a breakdown voltage slightly lower than 60V, assuming you have a way to safely drop the voltage for the comparator's level detection.
  4. LEDs: Red and Green LEDs.
  5. Resistors: Various values for configuring the 555 Timer, voltage divider, and current limiting for LEDs.
  6. Transistors: To switch the LEDs on and off based on the comparator output.
Circuit Design Approach:
  1. Voltage Detection:
    • Use a voltage divider to step down the battery voltage to a safe level for the comparator. Choose resistor values carefully considering the input impedance of the comparator.
    • Place a zener diode in parallel with the lower resistor of the voltage divider to set a precise reference voltage for the comparator.
  2. Comparator Configuration:
    • Connect the comparator in a way that its non-inverting input receives the reduced battery voltage and its inverting input gets the reference voltage from the zener diode.
    • Adjust the voltage divider and zener diode such that the comparator changes its output state when the battery voltage is slightly above and below 60V.
  3. LED Control:
    • Red LED Blinking: Use the output of the comparator to control a 555 Timer IC configured in Astable mode for generating a 2 Hz frequency. Connect the output of the 555 Timer to the base of a transistor that controls current flow through the red LED.
    • Green LED: Connect another transistor's base to the comparator's output through an inverter configuration so that the green LED is on when the battery voltage is below 60V.
Example Connection for the Comparator and 555 Timer:
  • Voltage Comparator:
    • Non-inverting input: Connect to voltage divider output.
    • Inverting input: Connect to zener diode/reference voltage.
    • Output: Connects to the 555 Timer control input and also to an inverter configuration for controlling the green LED.
  • 555 Timer ((Astable Mode for 2 Hz Blinking)):
    • Connect R1 between VCC and DISCHARGE ((Pin 7)),
    • Connect R2 between DISCHARGE ((Pin 7)) and THRESHOLD ((Pin 6)),
    • Connect a capacitor between THRESHOLD ((Pin 6)) and GROUND.
    • The output ((Pin 3)) drives a transistor to blink the red LED.
Assumption: You have the necessary components and understanding of how to safely handle voltages above 60V. Adjust the component values based on the exact specifications of the parts you choose.
Note: Due to safety concerns and complexity, especially when dealing with high voltages, consider consulting with a professional or using a programmable solution if possible.
2y
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