A constant current charging circuit with adjustable current

A constant current charging and adjustable technology, which is applied in the direction of battery circuit devices, circuit devices, collectors, etc., can solve the problems of inability to adjust the charging current, use many electronic components, and inconvenient use, and achieve good application prospects. The effect of simple circuit and convenient mass production

Active Publication Date: 2017-11-28
赛晶(江苏)视觉技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the charging circuit existing on the market, the circuit is more complex, the use of electronic components is more, the cost is higher, and the constant current source is used to charge the battery, and the charging current cannot be adjusted, which is inconvenient to use.

Method used

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  • A constant current charging circuit with adjustable current

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0015] Such as figure 1 As shown, a constant current charging circuit with adjustable current includes a transformer T, a rectifier bridge D, a current limiting resistor R1, a first zener diode D1, a second zener diode D2, a triode Q1, a first resistor R2, and a second zener diode. Two resistors R3 and selection switch S, the input end of the transformer T is connected to the mains, the output end of the transformer T is connected to the input end of the rectifier bridge D, the positive output end of the rectifier bridge D is connected to one end of the current limiting resistor R1, and the rectification The negative output end of the bridge D is grounded, the other end of the current-limiting ...

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Abstract

The invention discloses a constant current charging circuit with adjustable current, which comprises a transformer, the output end of the transformer is connected with the input end of a rectifier bridge, the positive output end of the rectifier bridge is connected with one end of a current limiting resistor, and the The other end is respectively connected with the anode of the first zener diode and one end of the selection switch, the cathode of the first zener diode is connected with the anode of the second zener diode, and the cathode of the second zener diode is connected to the ground through a resistor , the cathode of the second Zener diode is also connected to the base of the triode through a resistor, the other end of the selection switch is externally connected to one end of the first resistor or one end of the second resistor, the other end of the first resistor, the other end of the second resistor It is connected with the emitter of the triode, and the collector of the triode is used as the positive charging terminal of the battery. The invention has simple circuit, low cost, is convenient for batch production, and can adjust charging current, is convenient to use, and has good application prospect.

Description

technical field [0001] The invention relates to a constant-current charging circuit with adjustable current, which belongs to the technical field of electronic circuits. Background technique [0002] At present, the charging circuits on the market are relatively complicated, use more electronic components, and have high cost. Moreover, a constant current source is used to charge the battery, and the charging current cannot be adjusted, which is inconvenient to use. Contents of the invention [0003] The purpose of the present invention is to overcome the charging circuit existing on the market, the circuit is more complex, the use of electronic components is more, the cost is higher, and the constant current source is used to charge the battery, and the charging current cannot be adjusted, which is inconvenient to use. . The current-adjustable constant-current charging circuit of the present invention is simple in circuit, low in cost, convenient for mass production, capa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/04
Inventor 杨俊民
Owner 赛晶(江苏)视觉技术有限公司
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