JPS58105312A - Constant voltage circuit - Google Patents

Abstract

PURPOSE:To increase both speed of response as well as accuracy of output electric power for a constant voltage circuit which sets an ON time of a transistor and then supplies the constant voltage to a load, by setting the ON time of the transistor by the output of the 2nd comparing/amplifying means. CONSTITUTION:The voltage supplied to a load RL is detected by a voltage detecting circuit 7 and delivered to a differential amplifier 10 to be compared with the reference voltage E0. Then this differential is amplified and delivered to a differential amplifier 9. The amplifier 9 compares the voltage supplied from the amplifier 10 with the voltage to be applied to a resistance R2, and this differential is amplified and delivered to a pulse width control circuit 8. The circuit 8 sets by the output of the amplifier 9 the time width to be applied to the voltage of a transistor Q. As a result, an unstable state never occurs to a feedback system having an order delay element with a high level secured for the gain. Therefore the overall gain of the circuit can be increased.

Description

[Detailed Description of the Invention] (ml Technical Field of the Invention The present invention is based on the present invention, which has a parallel circuit consisting of a capacitor diode, an inductance, and a capacitor, and provides a constant voltage tube to the load. -Response speed and 5i on the buttocks
! Renovate the pressure tank and install the pressure tank at the foot of the mountain.

4- Technology O Background In the field of communication and the field of communication, the response voltage is ubiquitous, and the response is stable and as good as 1/IIK.
40 has been installed in the past @Haru) Conventional technology and problems 11! IIQ is an example of the *voltage #A path in the US.
is a transistor, 01 is; ndende, Lri inductance %RL is a load, l is a pulse-# path, S is a flat f#
- route, $ is IEJIII Masunobu-1 meeting is Kamiotsu Shinde-complex.

The dust s#Ig is 6 times with the conventional constant voltage - road board -
Agony Kj? , custom-f is the station clause, and continuation-G is the arrangement.

#1@φ is the phase angle and 6jysφ1 and -1 are the phase angles.

Gl & 2FG, is a diagram showing the view of constant voltage 1 step of price rice. In the figure, those in FIG. 1 and IIfJ and the same symbol represent the same device Il or element, D is a diode, □ and B are resistors, 0. is a capacitor!
6 is a pulse-@misaki-route, 6 is a differential amplifier, and 6 is a differential amplifier. , the transistor q turns on. 0 This means that the current flows from the input voltage mu to the input voltage mu to the collector transistor Q of the collector transistor Q of the transistor q.・Also, the current of the transistor Q flows through the diode Dxt and the transformer Tl0-K0SNIK. At this time, - next voltage -
The voltage generated at the secondary winding fiN- is smoothed by the current diode and the flat circuit 4) and supplied to the load RLK. When no voltage is applied to the base of Q, the transformer Tl
1L current no longer flows through m'1llNllN,], the voltage of transformer T is reversed, diode D is conductive, and the transformer is reset. However, transistor Ql#
, the voltage generated by the smoothing circuit 2 when the transistor Q is turned on is smoothed, so even if the transistor Q is turned off, the load RL
is supplied with voltage.

Next, we will explain the control system for supplying voltage to the load RLK house voltage of the constant voltage path in Figure 11C$1. Voltage detection (b) for the voltage depending on the load (however, input and output ground are common) In the case of , the voltage value from the voltage detection circuit 4 and the reference voltage E are t-ratioed, and the difference is amplified. and outputs it to the pulse width control circuit 161.

In the pulse width control circuit 1, the time width of the voltage corresponding to the pace of the transistor q by 211 J is set by the output of the 1III amplifier -8.

That is, by setting the on/off state of the transistor Ql according to the voltage value of the load RLK21El, a constant voltage of the load RL4C is supplied.Next K11
I will explain the operation of the constant voltage circuit.

This msamio constant voltage circuit is the same as the constant voltage circuit shown in Figure 1, except for the voltage system tIIjIp, and is provided with Nikumaki Iwao N as a second addition to the transformer Tl, and a diode D6, a mine 8, In other words, this constant voltage circuit converts the voltage caused by the secondary voltage -N into the diode D4. The voltage equalized by the resistor R1, R1m and the capacitor C1 and the reference voltage are collected by M# amplification #6, and the output is amplified and output. - Set the time width f of the voltage applied to the base of the transistor q: number.

In other words, the ON and OFF thresholds of the transistor Q were set to the highest voltage. In a constant voltage circuit, the tenth order &g is used as a conduction cost element.
By having an inductance L and a capacitance 10 in I#iI, it becomes 0s sl which is 2m or secondary.
``The board of the constant voltage circuit shown in the dark - 1st! , the phase angle characteristic shown in the jgz diagram (b) is 1180', and the number of laps is 311 (
The circuit is 0 can be said to be stable.Also, the faster the loop gain, the faster the response speed of the circuit0.However, in order to increase the response speed, if you increase the gain as shown in Figure 8 (-), 0, that is, f in the S81 diagram, which impairs the stability of the circuit because sufficient phase margin and gain margin cannot be taken.
The disadvantage of a pressure circuit is that it cannot provide high stability and response speed.

In the constant voltage circuit shown in Figure 8, the voltage of the transformer T□O is detected, so the output voltage is stable! The drawback was that II& was difficult to use as a samurai.

(dJ Purpose of the Invention The invention is not based on the above drawbacks of the conventional art. The purpose is to provide a vertical turret pressure IG1 with a rectifier diode and a transistor and a rectifier M14i1 with two transformers and a transducer. - A flat Il# circuit consisting of an inductance and a capacitor [with an output voltage of 19 and an on-state threshold t of the transistor
''In the constant voltage lP!l path that supplies a constant voltage to the load, the slope output voltage is compared with a predetermined reference voltage, and JJ
II- Comparison of the broom 1 to be outputted as amplification, increase in the ratio of the hand plate and the sl, and the output of the hand beast and the winding-section pressure of the cough transformer. When the xDsa transistor is turned on at the output of the ratio #Rjw-hand beast and the second ratio #Rjw-hand beast, darkness kI! I+! The number of beasts to be determined is 0.4 fJ %, which is defined as t threat value.One embodiment of the present invention will be described in detail with reference to Fig. 4.

4 is also a misfire - no Kaiden tItI&! In Figure 0, which is a diagram showing an example of one omitted construction, the same signs and symbols as in Figure 1 are the same Mill numbers, 7 is the voltage detection circuit, and 8 is the pulse width. 9 and 10 are differential amplifiers.

A voltage is applied to the base of the transistor from the pulse width side f14LgJ path 8, turning on the transistor Q, and the primary * m N z -Ns K1L current of the transformer Tl changes to p
By H, lt'L, a voltage is generated, and this voltage is generated at the second line #Ns and N4, which causes the load RLK to flow through the diode 1) and the smooth circuit. Voltage or i
A voltage is supplied to the resistor R through the resistor B1 and the capacitor C3.
/L/J Width side #When voltage is no longer applied to the base of the transistor Q from the circuit 8, the voltage of the transformer Tl is inverted and the diodes D and D4 are turned off. However, when the transistor Q is on, the voltage generated on the line #1 is smoothed, so even when the transistor Q is off, the voltage on the load KL is still 0,2 Next II! !
In addition, when the transistor Q is on, the voltage generated in the secondary circuit 84 connected to the transistor N4 is 1 on average due to the diode D, the resistor R1, and the capacitor TO. ◎ Next, let's talk about Rule 1 of the control system of this constant voltage circuit! I will clarify.

The voltage supplied to the negative NRLK is compared with E in the voltage detection line 7, and the negative voltage is amplified and outputted as an amplified 1IsK. The difference - increase - @s compares the voltage from 11i11jj41@@IIJ with the voltage added to the resistor, and the difference is amplified to output the pulse width control path IK. By the output of the enhancer 9.

Also sets the time width for applying the transformer Tl voltage. As an example of a gun, 1 volume fi 4 glue 9 secondary % 1 IkNs
K-The generated voltage may be cooled through the iW1-like O patchy flow smoothing circuit and input into the difference-increase-@S.However.

In this case, the ground for the human car output terminal is common, so voltage configuration 1&! 1jll? k141 admonition, input car output I! A
It is necessary to put the unwanted hot cup 2 etc. in the - place0
Further, the present invention is a circuit having a smoothing path including an inductance and a capacitor instead of a constant voltage path shown in No. 111,
It can be applied to anything that sets the voltage supplied to the load and the on and off times of a transistor.As explained above, the present invention has a second-order delay element. Feedback system with 0qPK A feedback system that does not include a two-time delay element, that is, a feedback system with a -long delay element.
A feedback system with two lag elements can increase its gain without becoming unstable, so even if the gain of a feedback system with a second-order lag element is low, the gain of a feedback system with a -th-order lag element can be increased. By doing &g
According to @, it is faster to increase the overall gain t-＾◎=IjC with t! By using the feedback system to improve stability by obtaining sufficient phase margin λ and gain margin, and increasing the gain by using the feedback system with one -order lag element, we can create a constant voltage circuit with a fast response speed. The effect is that it can be provided.

In addition, by recommending Samurai in a feedback system with 14 long-delay elements, the gain of the entire circuit will increase, so we will try to correct even the weakest feedback, without overlooking it.
I am happy that I can also get the effect of improving ett*.

[Brief explanation of drawings]

Figure ig1 is a diagram showing the IFI of a conventional constant voltage circuit. Figure 4 shows an example of the construction of the constant voltage circuit of the present invention. In the figure, E is the input electric current, 11. is the 4 quasi-voltage, and D! ~D4
is a diode, %Tl is a transformer, Q is a transistor, C
5 and Cs are capacitors, R1 and 1 are resistors, L is inductance, 8s is load, 1, I and 8 are expanded pulses - 11tlllill gang road, Hatake is flat akan road s II m
6 a 9 and etc. 1 Figure etc.? Trouble 3 Figure No. Φ

Claims (1)

[Claims] A smoothing 1g1 complex consisting of a transformer, a transformer 7 stars in the first 411111m of the transformer, and a shunt diode, an inductance, and a capacitor in the secondary *si* of the transformer.
Set the on-time of the transistor to the voltage, set the on-time of the transistor, and apply a constant voltage to the load.
11 wheels and output dust l Hiei Masunobu handshake and the first Hihei Masanobu handboard Tagata and I? ! ! Compare the Iwao voltage with the flattened voltage and increase the output. Ratio of Ougi 4's Hiei JIIIlli & Teshun and Kasumi 3 & amplification + I output KL, I set transistor on #dark. A constant voltage to make the object image &&! l road.