CN209345120U - A kind of RC charge-discharge circuit of repid discharge - Google Patents
A kind of RC charge-discharge circuit of repid discharge Download PDFInfo
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- CN209345120U CN209345120U CN201821753187.2U CN201821753187U CN209345120U CN 209345120 U CN209345120 U CN 209345120U CN 201821753187 U CN201821753187 U CN 201821753187U CN 209345120 U CN209345120 U CN 209345120U
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Abstract
The utility model discloses a kind of RC charge-discharge circuit of repid discharge, belongs to hardware circuit field.It includes capacitor C1, first resistor R1, diode D1 and second resistance R2, capacitor C1 and first resistor R1 series connection, diode D1 is in parallel with first resistor R1, one end of the anode and first resistor R1 of diode D1 is grounded jointly, and the cathode of diode D1 and the other end of first resistor R1 connect the end Output jointly;Second resistance R2 is in parallel with capacitor C1 and first resistor R1, and one end of second resistance R2 and one end of capacitor C1 connect the end Input jointly.The RC charge-discharge circuit of the repid discharge of the utility model, the resistance of charging circuit and the resistance of discharge circuit are mutually indepedent, and charging time and discharge time are flexibly adjustable, by Proper Match resistance value, realize the requirement of repid discharge.
Description
Technical field
The utility model belongs to hardware circuit field, especially a kind of RC charge-discharge circuit of repid discharge.
Background technique
Currently, the charging circuit of traditional RC charge-discharge circuit is that capacitor and resistance are connected, capacitor passes through parallel connection when discharging
Discharge resistance electric discharge, at this time there is the resistance of multiplexing in charging circuit and discharge circuit.Charging time and discharge time respectively by
The capacitance and resistance value for accessing circuit determine.Due to charging time to be taken into account and discharge time, resistance multiplexing will lead to tradition
RC charge-discharge circuit discharge time it is longer, and in practical application, have some applications need the RC charge-discharge circuit charging time compared with
Long, discharge time is shorter.Traditional RC charge-discharge circuit is difficult to meet above-mentioned requirements.
Utility model content
To solve the above problems, the utility model provides a kind of RC charge-discharge circuit of repid discharge, there is the charging time
It is long, discharge time short advantage, and charging time and discharge time are flexibly adjustable, can meet various working condition requirements.
To achieve the above object, the utility model adopts the following technical solutions:
A kind of RC charge-discharge circuit of repid discharge, it includes capacitor C1, first resistor R1, diode D1 and second resistance
R2, capacitor C1 and first resistor R1 series connection, diode D1 is in parallel with first resistor R1, anode and the first resistor R1 of diode D1
One end be grounded jointly, the cathode of diode D1 and the other end of first resistor R1 connect the end Output jointly;Second resistance R2 with
Capacitor C1 and first resistor R1 are in parallel, and one end of second resistance R2 and one end of capacitor C1 connect the end Input jointly.
Further, when the end Input powers on, charging circuit is connected and is capacitor C1 charging, and diode D1 is not turned on, and charges
Time is determined by the capacitance of capacitor C1 and the resistance value of first resistor R1.
Further, when the end Input does not power on, discharge circuit is connected, and diode D1 conducting, capacitor C1 passes through second resistance
R2 and diode D1 electric discharge, discharge time are determined by the capacitance of capacitor C1 and the resistance value of second resistance R2.
The utility model has the advantages that
The RC charge-discharge circuit of the repid discharge of the utility model, the resistance phase of the resistance and discharge circuit of charging circuit
Mutually independent, charging time and discharge time are flexibly adjustable, by Proper Match resistance value, realize the requirement of repid discharge.
Detailed description of the invention
Fig. 1 is the hardware circuit schematic diagram of the RC charge-discharge circuit of the repid discharge of the utility model;
Related elements symbol description: capacitor C1, first resistor R1, diode D1, second resistance R2.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
The utility model proposes a kind of RC charge-discharge circuits of repid discharge, as shown in Figure 1, it includes capacitor C1, first
Resistance R1, diode D1 and second resistance R2, capacitor C1 and first resistor R1 series connection, diode D1 is in parallel with first resistor R1,
One end of the anode and first resistor R1 of diode D1 is grounded jointly, and the cathode of diode D1 and the other end of first resistor R1 are total
It is same to connect the end Output;Second resistance R2 is in parallel with capacitor C1 and first resistor R1, one end of second resistance R2 and the one of capacitor C1
End connects the end Input jointly.
In use, charging circuit is connected when the end Input powers on, circuit is in charged state, and circuit charges to capacitor C1,
Diode D1 is not turned on, and the charging time is related to the resistance value of the capacitance of capacitor C1 and first resistor R1.When the end Input does not power on,
Discharge circuit is connected, and circuit is in discharge condition, and for the circuit for needing charging time length, the resistance value of first resistor R1 is logical
Be often several hundred kilo-ohms, be connected at this point for the biggish first resistor R1 of resistance value, diode D1, capacitor C1 by second resistance R2 and
Diode D1 electric discharge, discharge time are related with the resistance value of the capacitance of capacitor C1 and second resistance R2.When circuit is in charged state,
The end Output output voltage is slowly decreased to 0V by powering on voltage value, can be used to control the on-off of metal-oxide-semiconductor or triode.
Limitation to scope of protection of the utility model, those skilled in the art should understand that, in the skill of the utility model
On the basis of art scheme, the various modifications or variations that can be made by those skilled in the art with little creative work still exists
Within the protection scope of the utility model.
Claims (3)
1. a kind of RC charge-discharge circuit of repid discharge, it includes capacitor (C1), first resistor (R1), diode (D1) and second
Resistance (R2), it is characterised in that: the capacitor (C1) and the first resistor (R1) series connection, the diode (D1) and described the
One resistance (R1) is in parallel, and the anode of the diode (D1) and one end of the first resistor (R1) are grounded jointly, two pole
The other end of the cathode and the first resistor (R1) of managing (D1) connects the end Output jointly;The second resistance (R2) and the electricity
Hold (C1) and the first resistor (R1) is in parallel, one end of the second resistance (R2) and one end of the capacitor (C1) connect jointly
The end Input.
2. the RC charge-discharge circuit of repid discharge according to claim 1, it is characterised in that: when the end Input powers on,
Charging circuit is connected and is the capacitor (C1) charging, and the diode (D1) is not turned on.
3. the RC charge-discharge circuit of repid discharge according to claim 1, it is characterised in that: the end Input does not power on
When, discharge circuit is connected, and diode (D1) conducting, the capacitor (C1) passes through the second resistance (R2) and two pole
Manage (D1) electric discharge.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201821753187.2U CN209345120U (en) | 2018-10-26 | 2018-10-26 | A kind of RC charge-discharge circuit of repid discharge |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201821753187.2U CN209345120U (en) | 2018-10-26 | 2018-10-26 | A kind of RC charge-discharge circuit of repid discharge |
Publications (1)
Publication Number | Publication Date |
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CN209345120U true CN209345120U (en) | 2019-09-03 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201821753187.2U Active CN209345120U (en) | 2018-10-26 | 2018-10-26 | A kind of RC charge-discharge circuit of repid discharge |
Country Status (1)
Country | Link |
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CN (1) | CN209345120U (en) |
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2018
- 2018-10-26 CN CN201821753187.2U patent/CN209345120U/en active Active
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