The article offers information concerning the requirements needed in constructing a programmable current source circuit. It states that the circuit uses three sections of binary-coded-decimal (BCD) switches, a National Semiconductor LM317 three-terminal adjustable regulator and a handful of 1%-tolerant ...
The circuit inFigure 1is an easy-to-build, easy-to-use, low-cost current source. It comprises three sections of BCD (binary-coded-decimal) switches, a three-terminal adjustable regulator, a handful of 1%-tolerant resistors, and aNational SemiconductorLM317 three-terminal adjustable regulator. A...
Programmable current source is an electronic circuit that delivers or absorbs an electric current which is independent of the voltage across it. A current source is the dual of a voltage source. The term current sink is sometimes used for sources fed from a negative voltage supp...
A programmable current source programmable current source circuit has DAC current source providing an incrementally programmable current levels. A programmable reference current source adjusts a compliance factor of the DAC current source. An input adjustment code indicating an output current amplitude is ...
NOTE: Inverter stages are inserted between the device input pin and the input transistor as appropriate for either the rising edge delay or the falling edge delay portions of the circuit. Programmable Current Source A representation of the programmable current source is shown above. An internally de...
The circuit can provide any current level for which the external components (RSENSEand the pass transistor) can handle the associated power dissipation (P = IV). Because the ratio setting of digital potentiometers is very good (the typical ratiometric resistor tempco is 5ppm/°C), precision and...
◆ Protection mode: overvoltage, overcurrent, overload, short circuit, current limit, etc。 ◆ Provide readings of root mean square voltage, root mean square current, active power, frequency, power factor, etc。 ◆ For 100% load removal, the voltage stabilization response time is within 2ms,...
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◆ With automatic tracking energy calibration function, automatically increase and decrease the load level. ◆ Emergency stop and temperature protection, overload, short circuit, and over-temperature equipment automatically cut off. ◆ The upper limit and lower limit voltage settings are automatically red...