77081473 Allicdata Electronics
Allicdata Part #:

770-81-R47K-ND

Manufacturer Part#:

77081473

Price: $ 0.00
Product Category:

Resistors

Manufacturer: CTS Resistor Products
Short Description: RES ARRAY 7 RES 47K OHM 8SIP
More Detail: 47k Ohm ±2% 100mW Power Per Element Bussed 7 Resis...
DataSheet: 77081473 datasheet77081473 Datasheet/PDF
Quantity: 1000
1 +: 0.00000
Stock 1000Can Ship Immediately
$ 0
Specifications
Number of Pins: 8
Height - Seated (Max): 0.195" (4.95mm)
Size / Dimension: 0.800" L x 0.098" W (20.32mm x 2.50mm)
Supplier Device Package: 8-SIP
Package / Case: 8-SIP
Mounting Type: Through Hole
Applications: --
Operating Temperature: -55°C ~ 125°C
Temperature Coefficient: ±100ppm/°C
Power Per Element: 100mW
Series: 770
Resistor-Ratio-Drift: --
Resistor Matching Ratio: --
Number of Resistors: 7
Tolerance: ±2%
Resistance (Ohms): 47k
Circuit Type: Bussed
Part Status: Obsolete
Packaging: Bulk 
Description

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Resistor Networks, Arrays

A resistor network or array refers to an electrical network composed of an equivalent circuit, in which resistors and other devices form a predetermined electrical property pattern connected in the same plane to achieve the same purpose. Resistor networks and arrays are widely used in various fields.

77081473 Application Field and Working Principle

Resistor networks and arrays are widely used in power electronics. They are usually used to adjust the output voltage or current in power circuits, adjust the waveform characteristics of signal circuits, adjust the level of current or voltage in a certain range, etc. The output of a power transistor in a motor is used to obtain the necessary torque for the motor through a resistor network and output control circuit. Diode rectifiers also use complex bridge networks composed of resistors and capacitors to convert AC into DC, so as to allow a large power source to output multiple intermediate voltages to various circuits.In addition, in other circuit applications, resistor networks and arrays can be used as potentiometers, noise filters, resistive or reactive dividers, and current sensing networks, which can detect the current flowing through each branch in a certain resistor array, thereby determining the status of the circuit. The resistor network and array are also widely used in audio circuits, video circuits and interfaces.Generally speaking, open-type resistor arrays are composed of eight resistors, and every group of four resistors is replaced by an equivalent parallel resistor, which has the characteristics of large current capacity, small equivalent resistance and wide range of adjustment. The working principle of resistor networks and arrays is mainly in the following areas:① impedance measurement, ②high frequency amplification, ③reconstruction of waveforms, ④matched circuits that require high precision, ⑤interface circuits, etc.

Impedance Measurement

The impedance measurement method uses a measurement circuit and a measurement instrument to measure the impedance parameters of the LED. By changing the input circuit, a variety of measurement parameters can be obtained. Usually there are two types of LED equivalent circuits: one is an equivalent series resistance circuit, and the other is a parallel connection circuit between the LED and the resistor.

High Frequency Amplification

In order to reduce the influence of parasitic capacitance on the amplification circuit, it is necessary to reduce the equivalent circuit as much as possible. The resistor array in this circuit can reduce the equivalent circuit to a certain extent, so as to reduce the parasitic capacitance and reduce the impact of parasitic capacitance on circuit performance.

Reconstruction of Waveforms

Reconstruction of waveforms is also one of the most important applications of resistor networks and arrays. The resistors in this circuit are connected across the power supply. By setting the resistance value, a binary waveform can be generated on the output. Through multiple stages of resistor networks and arrays, a sinusoidal wave can be obtained. With this circuit, power amplification of arbitrary waveform can be achieved.

Matched Circuits Requiring High Precision

Matched circuits require high precision, and resistor networks and arrays can provide relatively high accuracy. The array is usually composed of several resistors in series to form a resistance ladder. Thus, the resistance value between two nodes is equal within a certain range. This principle is also applied to the design of precision potentiometers.

Interface Circuits

Resistor networks and arrays are also widely used in interface circuits. First, the current signal can be converted into a voltage signal in the circuit through the voltage division of resistors; second, resistors are connected to both ends of the transformer to form a current signal transformer, and then use signal amplifiers to convert the current signal into a voltage signal.

Conclusion

In summary, resistor networks and arrays are widely used in many fields, such as power electronics, impedance measurement, high frequency amplification, waveform reconstruction, and matched circuits requiring high precision. The main principle of the resistor network and array is that the resistors are connected in the same plane to achieve the same purpose. When connected in series, the equivalent resistance of the resistor array is larger than that of a single resistor; when connected in parallel, the equivalent resistance is smaller than that of a single resistor.

The specific data is subject to PDF, and the above content is for reference

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