Tuesday, September 1, 2015

Circuit Diagram Simple Power Supply Monitoring Device for +5V VCC Supply

Robotronicdiagram. - Here is circuit of power supply of Circuit Diagram Simple Power Supply Monitoring Device for +5V VCC Supply like in Figure 1 below. The main component in this power supply monitoring is LM393 IC and PMOS -FDN340P. With this circuit schematic you can monitor your 5V device like microcontroller. In here we will show you also the component part ans simple description of this circuit diagram. 

Circuit Diagram 

Component Part
  1. LM393 IC
  2. PMOS -FDN340P
  3. Capacitors
  4. Resistors
  5. Variable Resistor
  6. Zener Diode
  7. LED

Circuit diagram like in Figure 1 above is Circuit Diagram Simple Power Supply Monitoring Device for +5V VCC Supply. According Electroschematics site describe that This circuit is a very simple voltage monitoring device for +5V VCC supply lines. It can be used to monitor the power supply of a microcontroller (uC) by indicating when the supply level raises above a pre-defined value.

The output of the circuit can interface directly to digital logic, reset the microcontroller or turn off the connected microcontroller circuitry before it goes toasted owing to an improper power supply voltage. The ‘proof of concept’ is verified using the eternal single supply dual operational amplifier LM393. However, feel free to try other possible alternatives like LM2903, LM193, etc. The LM393 consist of two independent voltage comparators that are designed to operate from a single supply over a wide range of voltages (2V-36V). The outputs can be connected to other open-collector outputs to achieve wired-AND relationships.

The comparator compares two voltages, IN1 at the inverting (–) input and IN2 at the inverting (+) input. When IN2 < IN1, the comparator output is pulled Low, i.e. to GND, almost. When IN2 > IN1, the output is driven High, i.e. to nearly the positive rail voltage. The 2.4 V zener diode (ZD1) and the 470 Ω resistor (R1) form a shunt voltage regulator used to set up a reference voltage (IN1) of 2.4V at the inverting input. The 10K multi-turn preset potentiometer (P1) enables IN2 at the non inverting input to be set below the 2.4V threshold when the supply voltage (VCC) is at 5V.

Please read more this article from original source about Circuit Diagram Simple Power Supply Monitoring Device for +5V VCC Supply using link Here.

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