Search Results for: constant current circuit diagram
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 is the circuit: The operation of this circuit is simple, When the …
Read MoreTo make a constant speed motor control we can use Closed loop (servo) control. Constant speed motor is a motor that has constant speed although the load is change, indeed when the electric supply voltage is also changed. This circuit uses tachometer to sense the actual speed to maintain the speed at a constant value. …
Read MoreThis is a INA159 Dual-Polarity, Bidirectional Current-Shunt-Monitor Circuit. This circuit uses OPA340 because it has near rail-to-rail input and output swing ranges that allow the output voltage of the circut to approach 0 and 5V. The gain of OPA340 is set to +100 and the INA159 gain is +0.2V/V. This circuit has gain of +20V/V. …
Read MoreThis 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 the op-amp, the output is connected directly to the inverting input that will …
Read MoreThis is a circuit of precision current source. This circuit uses two kinds of transistor, the 2N2219 bipolar and the 2N3069 JFET. Both of them are used as voltage devices between the current sensing resistor and the output. As the current sensing resistor this circuit uses R1. Here is the circuit : …
Read MoreLTC6101 op-amp can be used to build High voltage current monitoring/sensing. This circuit can senses current in 500 volts system. Here is the circuit: 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. …
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