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Controllable on/off circuit

A technology of switching on and off circuit and resetting circuit, applied in the field of circuits, can solve problems such as cost increase, and achieve the effects of low cost, elimination of hardware jitter and artificial malfunction.

Inactive Publication Date: 2010-07-21
FUJIAN XINO COMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Since the switching circuit requires a single-chip microcomputer DPJ as a programmable device, and the circuit needs to be programmed to participate in the switching process, the time setting of the switching machine is realized by software, and the cost is greatly increased, so it is necessary to improve

Method used

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  • Controllable on/off circuit
  • Controllable on/off circuit
  • Controllable on/off circuit

Examples

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Embodiment Construction

[0017] see figure 2 As shown, a preferred embodiment of the present invention is provided. The controllable switch circuit in this embodiment includes a first reset circuit 11 , a second reset circuit 12 , and a self-locking circuit 13 .

[0018] The first reset circuit 11 further includes a reset chip U1, an adjusting capacitor E1, and an NPN transistor Q1; the second reset circuit 12 further includes a reset chip U2, an adjusting capacitor E3, and an NPN transistor Q5; The reset chips U1 and U2 are both R3112N241A chips, and the capacitance integral durations of E1 and E3 are different; the self-locking circuit 13 adopts a line-or circuit formed by connecting two diodes D2 and D3, and the positive pole of D2 in the self-locking circuit Connect a D3.3V power supply, the positive pole of D3 is connected to the power button S1, and the negative poles of D2 and D3 are connected to the Vdd terminal of the reset chip U2.

[0019] The Vdd end of the reset chip U1 is the input end...

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PUM

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Abstract

The invention provides a controllable on / off circuit. The controllable on / off circuit comprises a first reset circuit, a second reset circuit and a latching circuit, wherein the second reset circuit comprises a reset chip U2, a regulating capacitor E3 and an NPN triode Q5;The input end of the first reset circuit is connected with a power button S1; the input end of the second reset circuit is connected with the power button S1 through the latching circuit; the output end of the first reset circuit and the Cd end of the reset chip U2 are connected to the positive pole of the regulating capacitor E3; the Vdd end of the reset chip U2 is the input end of the second reset circuit; the OUT end of the reset chip U2 is connected with the base of the triode Q5; the collector of the triode Q5 is connected to a complete machine system power supply VSYSTEM through an MOS tube Q2; and the power button S1 and the collector of the triode Q5 are connected to both ends of the power supply VPOWER in parallel. The invention can switch the on / off state by pressing one button only after treating the hardware circuit, and does not need software programming, thereby having the advantage of low cost.

Description

【Technical field】 [0001] The invention relates to a circuit, in particular to a controllable on / off circuit. 【Background technique】 [0002] In the electronic communication application industry, there are high requirements for the switch circuit, and for mid-to-high-end products, the switch circuit is required to have malfunction protection, anti-shake, and software controllable functions. However, the existing switch circuit needs a programmable device (such as a single-chip microcomputer), and the circuit needs to be programmed to participate in the switch process; in addition, the time setting of the switch is realized by software, so the overall circuit price is relatively high. [0003] Such as figure 1 As shown, it shows an existing switching machine circuit, including an NPN triode BG2, which controls the conduction and shutdown of the collector and the emitter through the high and low levels of the base, high conduction, low shutdown; a PNP Transistor BG1, which co...

Claims

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Application Information

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IPC IPC(8): H03K17/22
Inventor 钱光洪周遵亮
Owner FUJIAN XINO COMM TECH
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