JPS5882318A - Power source device - Google Patents

Abstract

PURPOSE:To obtain a positive-negative symmetrical output through simple constitution by connecting the parallel circuit of a rectifier equal in polarity to the half cycle of an AC output on the low level side and impedance in series to one AC output terminal. CONSTITUTION:At the high potential side of the secondary winding 14 of a transformer 12, and AC output terminal 17 is provided through the parallel circuit of a rectifier 15 and impedance 16. In a half cycle equal in polarity to a rectifier 18 on a DC output side, a current flows through the rectifier 15 to obtain a cut output waveform and in the next half cycle, the current flows through the impedance 16 parallel to the rectifier 15. Therefore, a voltage drop across the impedance causes a decrease in the peak of the output waveform between output terminal 17 and 21, so the value of the impedance 16 is selected properly to obtain an output waveform which is nearly symmetrical on the zero level.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power supply device (-) which extracts both AC output and blood flow output from a common transformer, and which has several positive and negative asymmetric characteristics of t output.

The conventional power supply device shown in circuit C of FIG.
It has an AC output terminal (2), a curved output terminal (3) and a common ground terminal (4) on the second side of the AC output and Mm.
I am trying to extract both outputs. Therefore, when the above AC output is half cycled in the direction in which the current flows by the rectifier (5) in the half-wave rectifier circuit, the 311 part of the v-shape is cut by the smooth contin-1j (61) in the half-wave rectifier circuit, On the other hand, during the opposite half cycle, the rectifier circuit is not affected and the waveform appears as it is, resulting in a positive/negative asymmetric waveform. In particular, copying drums have a low impedance on the negative side, as shown in Figure 3, 1al. The discharge current was 1:2JJ0, which caused the problem that a clear image could not be obtained.

The present invention has been made in view of the above circumstances, and by extraneously connecting a parallel circuit of a rectifier and an impedance whose polarity is matched to the low-level half cycle of the AC output to one of the AC output terminals,゛4! Symmetrical positive and negative outputs can be obtained and the configuration is simple! , the purpose is to provide control equipment.

The details of the present invention will be explained below with reference to the drawings. Ol is the power supply terminal, and the primary winding 03 of the transformer 02) is connected to this yoke.
are connected. And the transformer (secondary volume 1 of 121
Q41 has an AC output terminal (1
7) and the above-mentioned AC output terminal 171 and +
A rectifier (181) with the same polarity as the rectifier (15) in the +i+ column
A curved output terminal (19) is provided via the. Also,
(20) is the common grounding satin provided on the low potential side of the two pujas SU4+, (22+ is the contin v connected between the connection point with the rectifier a& and the DC output terminal (19i) and the common terminal (2D)
This is a smoothing circuit consisting of a parallel circuit of (221) and a resistor (23).

The present invention will now be described in detail.

AC output terminal 0゛l) and common terminal (211 and song 7A
A load is connected between the t output terminal θ9 and the common terminal 011, and a south source is connected to the power terminal (11). However,
The AC output side is curved, the output side is rectified, and there is one half-length cycle C''' with the same polarity as 181, which is light and heavy 'li (15
1, the current flows as before - a truncated output waveform appears in this half cycle, and for the next half cycle the current flows through the impedance <161 in parallel with the rectifier σ51. current, and the voltage drop of this impedance causes the output terminal (171, f21
The beater of the output waveform between 1 and 1 decreases, and the difference between For example, as shown in Section 3 (6), the electric current applied to the drum is 1:1゜2)l and the width is c''.
I am sorry. Note that it is easy to make positive and negative j: I in the opposite form α), but it is necessary to take into consideration the loss due to impedance (Ifil) and within a range that does not cause problems for human use. Sushi also does not have to have a positive/negative ratio of 1:1C.In addition, in the two-day uraseseri, an impedance was provided in contrast to the negative half y<tal, but the positive half cycle The peak is I
In case of risk, set up a 50mm impedance on the positive half cycle, connect this impedance in parallel with the negative half cycle and a rectifier between the same side, and connect this to the counter current output. If it is connected to one of the ends, the reverse relationship with the Loli example occurs: the non-genius immortal, he) 1, and the reformer will be separated. In addition, as a conventional one, Japanese Utility Model Publication No. 43-9997 (
There are two types of
Nbee dance left yohi! l! This circuit is similar to Kenki's invention, but its purpose is to obtain an asymmetrical output waveform, and it also connects a curved output waveform from a common I lance. This type of output is designed to take out both sides of the AC output, and is not a straight one, but a one that takes out both the direct and direct outputs. This is different from the present invention because there is no disclosure of ≦2 that eliminates the problem of generation.

As described above, the present invention extracts both AC output 2 and curved flow 1 output from a common transformer, and in the case where the AC output is asymmetrical, the AC output end (outside of the two Since the parallel circuit of the rectifier and impedance in the same direction as the low level of AC output (1) is connected, the output can be shaped into a symmetrical shape or an AC output that approximates a symmetrical waveform. Moreover, it is easy to purify and can be manufactured at low cost.

[Brief explanation of the drawing]

No. 11 is a road diagram showing a conventional example, FIG. 2 is a circuit diagram of the present invention, and No. 318! , I(al and iJ:lbl are the output waveform diagrams of the conventional circuit according to the present invention. ... Rectifier (1
61... Impedance. Patent applicant: Toshiba Ryuzai Co., Ltd. Agent Patent attorney: Yoshihiro Ono (1)

Claims (1)

[Claims] Both AC output and DC output are taken out from a common transformer, and the AC output is asymmetric between positive and negative. A power supply device characterized by connecting parallel circuits of Betans.