JPH04134802U - T-type resistor network - Google Patents

Abstract

(57) [Summary] [Purpose] To identify the shape of a resistor and the trimming portion of a resistor such that trimming the trimming portion of a certain resistor does not change the resistance value of other resistors. [Structure] Two trapezoidal resistors are connected to each other at their short sides. A terminal 4 is formed on the long side of the first trapezoid, and both sides of the first trapezoid are used as trimming parts 10 and 11. Terminals 5 and 6 are formed on both sides of the second trapezoid, and the long sides of the second trapezoid are used as trimming portions 12.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

TECHNICAL FIELD The present invention relates to a T-type resistor network and to trimming a resistor.

0002

[Conventional technology]

FIG. 2 is a plan view of essential parts of a conventional T-type resistor network. In the figure, 15, 16 and and 17 are resistors, and each resistor is formed by printing a resistor 18 on the upper surface of the substrate. 1 9, 20 and 21 are terminals, which are formed by printing a conductor on the top surface of the board, and is connected to one end of each resistor. During the manufacturing process, each resistor 15, 16 and 17 is In order to adjust the resistance value to a predetermined value, the trimming parts 22, 23 and I was trimming 24. Trimming of 3 trimming parts requires 3 resistors. each affects the resistance value of Therefore, the resistance value of the series resistance of resistor 15 and resistor 16 is and trim the resistance value of the series resistance of resistor 15 and resistor 17 to the desired value. The series resistor of resistor 16 and resistor 17 is The trimming portion 24 is mainly trimmed in order to obtain a high resistance value. and experience Repeat the above trimming several times, taking into consideration the degree to which it will affect the resistance value. I had to go back and trim it and adjust it to the specified resistance value, which took a lot of effort and time. .

0003

[Problem that the idea aims to solve]

The present invention was devised in view of the above-mentioned problems of the conventional technology. The resistance value of other resistors does not change even if the trimming part is trimmed. Identify the trimming region of the shape and its resistance.

0004

[Means to solve the problem]

In order to solve the above problem, in the present invention, the first trapezoid is a resistance region, and the first trapezoid is A first terminal part is provided on the long side, both sides of the first trapezoid are used as trimming parts, and the second trapezoid is is the resistance area, second and third terminal parts are provided on both sides of the second trapezoid, and the long side of the second trapezoid is The short sides of the first trapezoid and the second trapezoid are connected to each other, with the part as the trimming part. The present invention provides a T-type resistor network characterized by:

[0005]

[Effect]

According to the above configuration, two trapezoidal resistors are connected to each other at their short sides. 1st Terminals are formed on the long sides of the trapezoid, and both sides of the first trapezoid are used as trimming parts. 2nd unit Terminals are formed on both sides of the shape, and the long sides of the second trapezoid are used as trimming parts.

[0006]

【Example】

Embodiments of the present invention will be described in detail with reference to the accompanying drawings. Figure 1 shows the T-type resistor of the present invention. FIG. 2 is a plan view of a main part showing an example of an anti-circuit network. In the figure, 13 is a resistor, and the resistor is printed on the top surface of the board to connect resistors 1, 2, and and 3. 4 is the terminal of resistor 1, 5 is the terminal of resistor 2, and 6 is the terminal of resistor 3. Terminals are formed by printing conductors on the top surface of the board. Figure 1 (b) and (c) and (d) are diagrams showing the effective resistance part, and 7 is the effective resistance of the series resistance of resistors 1 and 2. By trimming the effective resistance part 7 in the resistor part, resistors 1 and 2 can be connected in series. Set the resistance value to the desired resistance value. 8 is the effective resistance part of the series resistance of resistors 1 and 3 By trimming the effective resistance part 8, the series resistance value of resistors 1 and 3 is Set to the desired resistance value. 9 is the effective resistance part of the series resistance of resistors 2 and 3; Desired series resistance value of resistors 2 and 3 by trimming the effective resistance part 9 Set the resistance value to (e) of the figure shows the trimming parts of each resistor. and 11 are trimming parts, and the trimming parts 10 and 11 can be trimmed. Adjust the resistance value of resistor 1 to the desired value. This trimming area 10 and 1 Trimming 1 does not change the values of resistors 2 and 3. 12 is trimming By trimming the trimming part 12, the resistance values of resistors 2 and 3 can be changed by trimming the trimming part 12. Adjust to desired value. Effective resistance to finely adjust the combined resistance value of resistor 1 and resistor 2 Trim the overlapped part of part 7 and trimming part 12, and make the sum of resistor 1 and resistor 3. To fine-tune the formation resistance value, adjust the area where the effective resistance part 8 and the trimming part 12 overlap. Trim.

[0007]

[Effect of the idea]

As described above, in this invention, the trimming part of a certain resistance is trimmed. also changes only the resistance value of that resistor and does not change the resistance value of other resistors. Trimming the trimming area as before to affect the resistance values of multiple resistors. You can easily adjust the resistance to the desired resistance value. The effect is great.

[Brief explanation of drawings]

FIG. 1 is a plan view of essential parts of an embodiment of a T-type resistor network according to the present invention.

FIG. 2 is a plan view of essential parts of a conventional T-type resistor network.

[Explanation of symbols]

1 resistance 2 resistance 3 Resistance 4 terminal 5 Terminal 6 terminal 7 Effective resistance part 8 Effective resistance part 9 Effective resistance part 10 Trimming area 11 Trimming area 12 Trimming area 13 Resistor 15 resistance 16 resistance 17 Resistance 18 Resistor 19 terminal 20 terminals 21 terminal 22 Trimming area 23 Trimming area 24 Trimming area

Claims (1)

[Scope of utility model registration request] Claim 1: A first trapezoid is a resistance area, a first terminal part is provided on a long side of the first trapezoid, both sides of the first trapezoid are trimming areas, a second trapezoid is a resistance area, and the second trapezoid is a resistance area. A T-shaped resistor, characterized in that second and third terminal parts are provided on both sides of the T-shaped resistor, the long side of the second trapezoid is used as a trimming part, and the short sides of the first trapezoid and the second trapezoid are connected to each other. circuit network.