High DC Voltage Current Sensing

LTC6101 op-amp can be used to build High voltage current monitoring/sensing. This circuit can senses current in 500 volts system. Here is the schematic diagram of the circuit:

high voltage current sensing circuit schematic diagram

To hold off the voltage, two external Mosfets is added to the circuit. It will allow to connect LTC6101 to very high potentials and measure the current flow.  At Rsense, the output current from the op-amp is proportional to the sensed voltage. It flows through M1 and create a ground referenced output voltage. [Schematic diagram source: Linear Technology Application Notes]

This entry was posted in Test and Measurement and tagged . Bookmark the permalink.,
Possibly Related to "High DC Voltage Current Sensing" Circuits

  • Self Powered Current Sensing
    This is a current sensing circuit that senses the current at the high side (between load and positive supply). This circuit     take advantage from Rail-to-Rail input of the LT1494 and the microampere supply current. Here is the circuit : At … Continue reading →...
  • High/Low Voltage Probe
    Simple voltage probe circuit shown in the schematic diagram below very useful in testing, testing, or troubleshooting discrete  or integrated circuits, especially logic circuitry. This voltage probe circuit gives two indication, “high” or “low”. Here is the schematic diagram of … Continue reading →...
  • Constant Current Constant Voltage Switching Power Supply
    This is a circuit that produces constant current constant voltage  SMPS. To efficiently charge a battery, we can use constant current constant voltage  SMPS. This circuit produces 600 mA at constant current mode and 7.2V at constant voltage mode. Here … Continue reading →...
  • High-Brightness LED-Driver
    This is a high-brightness LED-driver circuit. To provide a constant-voltage output we usually use DC/DC regulators. But constant-current output is the one that is needed in LED application. To provide a constant-current output, we can use this circuit. Here is … Continue reading →...
  • Computer-Controlled 4-20mA Current Loop
    In some industries, to control the some equipments they are use computer-controlled 4-20mA current loop. This current loop is used transmit  a signal over a long distance wires. With current loop, the signal will be resistant from noise interference. To … Continue reading →...

Comments are closed.