精密电流源:Precision Current Source The precision current source is shown in Figures 17, 18. The configurations shown will sink or source conventional current respectively. Caution must be exercised in applying these circuits. The voltage compliance of the source extends from BVCER of the external tr...
A circuit for providing an output current the magnitude of which is substantially independent to variations in the power supply voltage applied thereto. The circuit comprises first and second current sourcing transistors, and a conventional &Dgr;V.sub.be /R current mirror circuit for setting the ...
which allows you to transform one type of transmitter to another, or to create a repeater for the purpose of extending the loop length. Circuit examples include an input-sink/output-sink mirror (Figure 1a), and an input-source/output-source mirror (Figure 1b). These circuits ...
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...
Since the only path for the load current to flow is through RS, controlling the voltage across RS controls the current through the load. Stability can be improved in the system with a biasing capacitor between cathode and reference but this will lower the response time of the circuit. The ...
Precision current source A circuit for providing an output current the magnitude of which is substantially independent to variations in the power supply voltage applied thereto. The circuit comprises first and second current sourcing transistors, and a conventio... ED Joseph - US 被引量: 69发表: ...
Voltech DC1000 Precision DC Bias Current Source 使用 V oltech DC1000 Precision DC Bias Current Source
Edward H. NicollianHarold SeidelGeorge E. SmithUSUS4278947 Sep 17, 1979 Jul 14, 1981 Bell Telephone Laboratories, Incorporated Precision frequency source using integrated circuit elementsUS4278947 1979年9月17日 1981年7月14日 Bell Telephone Laboratories, Incorporated Precision frequency source using ...
Aiming at the issue of obtaining high quality constant-current source in measurement field,the circuit design and error analysis for a high precision program-controlled constant-current source are presented in detail.The constant-current source is under control of single chip computer;through combining...
</ P> THIS CIRCUIT INCLUDES A DIFFERENTIAL 20-BAND INTERVAL AMPLIFIER, CONSTANT AND INDEPENDENT TEMPERATURE POWER SUPPLY, A CONVERTER 21 A DIFFERENTIAL HIGH-UNIPOLAR OUTPUT, A THERMALLY COMPENSATED NEGATIVE REACTION NETWORK 24 AND A COMMON POLARIZATION SOURCE FOR USE AS A DEVICE CAPABLE OF PROVIDING...