JPS5957402A - Variable resistor - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (111) Technical Field of the Invention The present invention relates to a variable resistor that integrates a resistance value adjustment section and a measurement terminal.

(2. Technical Security) In general, a variable resistor is included as a component in an electric circuit such as a printed board. The resistance value must be set to a predetermined value.Measuring instruments are used to do this, but conventional variable resistors pose various problems that must be resolved, such as the occurrence of adjustment errors. There is a need for the development of technical means to do so.

13), Prior Art and Problems As shown in Figure 1, a conventional variable resistor is installed on a flint board a, and the measurement (check) terminals S and C for adjustment are variable. Connect a measuring device e to terminals S and C, which are installed in a separate position from the resistor d, and adjust the variable resistor d with a setting screwdriver f while observing the displayed output of the measuring device. The resistance value of the variable resistor is set to a predetermined setting value.

Such techniques require separate measurement terminals and variable resistors. Therefore, not only are adjustment errors likely to occur, but because the installation locations must be secured, the circuit becomes bulky and bulky, and the workability of adjustment is poor, and the time involved tends to be prolonged.

(411 Purpose of the Invention The present invention was devised in view of the above-mentioned technical problems, and its purpose is not only to help prevent adjustment errors, but also to make the circuit more compact and improve workability p), <+ The purpose is to provide a variable resistor that contributes to shortening the adjustment time.

(5) Structure of the Invention This object is achieved by configuring the conductive resistance value adjusting section electrically connected to the V and 'il adjustment outputs of the variable resistor to also serve as a measurement terminal.

(6) Embodiment 1 of the Invention The present invention will be described in detail below with reference to Appendix A and Figure 1.

No. 2 and 1 shows an embodiment of the present invention. In the figure, there is shown a variable resistor of the present invention, which consists of a variable resistance part 2 and a conductive resistance value adjustment/measuring part 3 which also serves as a measurement terminal, and is attached to a support 4 such as a printed board with screws, etc. It is fixed by means 5 and 6.

The variable resistance section 2 has a shaft connected to the rotation shaft 7 of the adjustment/measuring section 3, and when the shaft is rotated, the resistance value of the variable resistance section 2 is changed, and the output value is adjusted and measured. It is configured to appear in Section 3.

A concave or convex portion 3a is formed on the calculation surface of the resistance value adjustment/measuring unit 3, and a four-intelligence adjuster 8 having a convex or concave portion 8a that fits into the concave or convex portion 3a is prepared. Reference numeral 9 denotes a measuring device for connecting the lead wire 10 to one input terminal of the sensor 8 with a wire.

The sacral input terminal of the measuring device 9 is connected via a lead wire 11 to ground or to an appropriate circuit section of the electric circuit to which the variable resistor 1 is connected. 12 is a measuring tool.

A and B do not necessarily have to be separate bodies.

3. It is desirable that the rotating shaft 7 of 3a be directly substituted.
There is no connection between the variable resistance section 2 and the surface b'. 5, 6, etc. may also be fixed directly to 4 as a terminal of 1 itself by fastening 1 or the like.

Next, how to adjust the variable resistor 1 will be explained.

Connect the lead wires 10 and 11 to the measuring device 9, and
While the conductive measuring tool 12 at the other end is connected to a predetermined circuit part of the electric circuit, for example, connected to or in contact with the ground pressure, the conductive measuring tool 12 at the other end of the lead wire 1o Or, by fitting the fourth part 8a into the concave or convex part 3aK of the adjustment part 3,
The adjustment tool 8 is rotated in an appropriate direction while observing the display or indicated value of the measuring instrument.

When the value appearing on the setting device reaches a predetermined value, the rotation of the adjustment tool 8 is stopped and the setting of the variable resistor is completed.

Such settings can be carried out by rotating the adjusting/measuring section 3 of the variable resistor 1, which is electrically and structurally integrated with the output of the variable resistor section 2, using the adjusting tool 8. Therefore, it is not a foolproof method that helps prevent the occurrence of setting errors, it promotes the compactness of the circuit, and it also improves work efficiency and shortens the setting time.

In the above embodiment, an example in which the adjustment/measuring section is of a rotating type has been described, but it may also be configured as a sliding type.

(Effect of invention with zero force As described above, according to the present invention, ■ Prevents variable resistor setting errors and ■ Compact circuit, ■ Improving work efficiency and ■ Effects such as contributing to shortening of setup time can be obtained.

[Brief explanation of drawings]

FIG. 1 is a diagram showing a conventional measurement configuration, and FIG. 2 is a diagram showing an embodiment of the present invention. In the figure, 1 is a variable resistor, 2 is a variable resistance section, and 3 is a conductive resistance value adjustment/measuring section. Patent applicant: Fujitori Co., Ltd. '1'; l: Il -2 - Figure 1 Figure 2

Claims (1)

[Claims] 1. A variable resistor comprising a conductive resistance training and measuring section adjustably coupled to the variable resistance section and electrically connected to the adjustment output thereof.