CN206294138U

CN206294138U - A kind of 50Hz symmetrical complements time base circuit chip

Info

Publication number: CN206294138U
Application number: CN201621401806.2U
Authority: CN
Inventors: 吴瑞良
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-12-20
Filing date: 2016-12-20
Publication date: 2017-06-30
Anticipated expiration: 2026-12-20

Abstract

The utility model discloses a kind of 50Hz symmetrical complements time base circuit chip, for producing the 50Hz square-wave signals used for inverter, its semi-conductor silicon chip, oscillating circuit and frequency dividing circuit for including shell and enclosure, wherein：Shell is provided with DC power anode terminal, DC power cathode terminal, crystal oscillator inserting terminal and lead-out terminal, and 50Hz square-wave signals are produced by lead-out terminal；Oscillating circuit and frequency dividing circuit are arranged on semi-conductor silicon chip, and frequency dividing circuit is connected with oscillating circuit；Oscillating circuit includes a crystal oscillator, a resistance, an electric capacity and two not gates, the frequency of crystal oscillator is 3.2768MHz, and crystal oscillator inserts crystal oscillator inserting terminal by outside, and the resistance of resistance is 4.7k, the capacitance of electric capacity is 100p, and it is 3.2768MHz square waves that oscillating circuit is used to produce frequency；Frequency dividing circuit includes 16 frequency-halving circuits, and each frequency-halving circuit includes four not gates and four transmission gates, and frequency dividing circuit obtains 50Hz square waves after 16 two divided-frequencies are carried out to 3.2768MHz square waves.

Description

A kind of 50Hz symmetrical complements time base circuit chip

Technical field

The utility model is related to a kind of signal source, in particular to a kind of 50Hz symmetrical complements time base circuit chip.

Background technology

Inverter is a kind of device that direct current is converted to alternating current, its operationally generally require generation frequency be The square-wave signal of 50Hz, can produce the signal source of the square-wave signal that frequency is 50Hz mostly using discrete component and integrated at present Electrical combination is on a printed circuit board (PCB), and the volume and weight of this signal source is larger, with certain inconvenience on.

Utility model content

In order to achieve the above object, the utility model provides a kind of 50Hz symmetrical complements time base circuit chip, and it is one IC chip is planted, for producing the 50Hz square-wave signals used for inverter, it includes the half of shell and enclosure Conductor silicon chip, oscillating circuit and frequency dividing circuit, wherein：

The shell is provided with DC power anode terminal, DC power cathode terminal, crystal oscillator inserting terminal and output end Son, 50Hz square-wave signals are produced by the lead-out terminal；

The oscillating circuit and the frequency dividing circuit are arranged on the semi-conductor silicon chip, and the frequency dividing circuit shakes with described Swing circuit connection；

The oscillating circuit includes a crystal oscillator, a resistance, an electric capacity and two not gates, wherein, the frequency of the crystal oscillator is 3.2768MHz, the crystal oscillator inserts the crystal oscillator inserting terminal by outside, and the resistance of the resistance is 4.7k, the electric capacity Capacitance is 100p, and the oscillating circuit constitutes a CMOS anti-phase oscillations device, for the side for producing frequency to be 3.2768MHz Ripple；

The frequency dividing circuit includes 16 frequency-halving circuits, and each frequency-halving circuit includes four not gates and four transmission Door, the frequency dividing circuit obtains 50Hz square waves after 16 two divided-frequencies are carried out to 3.2768MHz square waves.

In an embodiment of the present utility model, the not gate in not gate and frequency-halving circuit in oscillating circuit is use CD4069 is realized.

In an embodiment of the present utility model, the transmission gate in frequency-halving circuit is to be realized using CD4066.

The utility model provide 50Hz symmetrical complement time base circuit chips have small volume, it is lightweight, easy to use, can By property it is high the advantages of, can very easily for inverter provide needed for 50Hz square-wave signals, with very strong practicality.

Brief description of the drawings

In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are only It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work Under, other accompanying drawings can also be obtained according to these accompanying drawings.

Fig. 1 is the circuit diagram of oscillating circuit and preceding 4 frequency-halving circuits；

Fig. 2 is the schematic diagram of 4 transmission gates and 4 not gate one frequency-halving circuits of composition；

Fig. 3 is the schematic diagram that oscillating circuit is connected with 16 frequency-halving circuits；

Fig. 4 is the structural representation of transmission gate；

Fig. 5 a are the schematic diagram that cmos transmission gate NAND gate constitutes analog switch；

Fig. 5 b are four schematic diagrames of bilateral analog switch in CD4066；

Fig. 6 is the equivalent circuit diagram of CMOS not gates；

The schematic appearance of the 50Hz symmetrical complement time base circuit chips that Fig. 7 is provided for the utility model.

Specific embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is paid The every other embodiment for being obtained, belongs to the scope of the utility model protection.

The utility model provides a kind of 50Hz symmetrical complements time base circuit chip, for producing what is used for inverter 50Hz square-wave signals, its semi-conductor silicon chip, oscillating circuit and frequency dividing circuit for including shell and enclosure, wherein：

Shell is provided with DC power anode terminal, DC power cathode terminal, crystal oscillator inserting terminal and lead-out terminal, by Lead-out terminal exports 50Hz square-wave signals；

Oscillating circuit and frequency dividing circuit are arranged on semi-conductor silicon chip, and frequency dividing circuit is connected with oscillating circuit；

Oscillating circuit includes a crystal oscillator, a resistance, an electric capacity and two not gates, wherein, the frequency of crystal oscillator is 3.2768MHz, crystal oscillator inserts crystal oscillator inserting terminal by outside, and the resistance of resistance is 4.7k, and the capacitance of electric capacity is 100p, vibration Circuit is used for the square wave for producing frequency to be 3.2768MHz, and the not gate and crystal oscillator in oscillating circuit constitute series resonance feedback element, Enable to the square wave frequency for producing more accurate and stable using crystal oscillator；

Frequency dividing circuit includes 16 frequency-halving circuits, and each frequency-halving circuit includes four CMOS not gates and four CMOS Transmission gate, a two divided-frequency, side of the frequency dividing circuit to 3.2768MHz are realized by four CMOS not gates and four cmos transmission gates Ripple obtains 50Hz square waves after carrying out 16 two divided-frequencies.Because not gate and transmission gate are most basic, simplest in integrated circuit patrolling Component units are collected, therefore, the utility model can realize most simple, most practical frequency divider.

Fig. 1 is the circuit diagram of oscillating circuit and preceding 4 frequency-halving circuits, as illustrated, crystal oscillator X, electricity in oscillating circuit Resistance R, electric capacity C and inverter ic 0 are connected according to the mode in Fig. 1, consequently, it is possible to oscillating circuit a pair of CMOS not gates and crystal oscillator Just constitute a feedback network for series resonance, in addition, IC1, IC3, IC5 and IC7 are CD4066, IC0, IC2, IC4, IC6 and IC8 are CD4069, and IC1 and IC2, IC3 and IC4, IC5 and IC6, IC7 and IC8 respectively constitute a frequency-halving circuit, by Limited in length, preceding 4 frequency-halving circuits have only been shown in Fig. 1, IC1 and IC2 is completed first time two divided-frequency, and IC3 and IC4 are complete Into second two divided-frequency, IC5 and IC6 completes third time two divided-frequency, and IC7 and IC8 completes the 4th two divided-frequency.13 pins of IC0 Output frequency is 3.2768MHz square waves, 12 and 13 pins of the 3.2768MHz square wave inputs to IC1, the 12 pins output of IC0 Same frequency square wave input to IC1 5 and 6 pins, it is possible to obtaining opposite polarity, frequency in 12 and 13 pins of IC2 is The square wave of 3.2768MHz/2 (1.638MHz), similarly, the square wave that frequency is 0.819MHz is obtained in 12 and 13 pins of IC4, 12 and 13 pins of IC6 obtain the square wave that frequency is 0.409MHz, and it is 0.205MHz's to obtain frequency in 12 and 13 pins of IC8 Square wave, so can obtain 50Hz square-wave signals by 16 two divided-frequencies, and the 50Hz square-wave signals can be used as making for inverter 50Hz square-wave signals.

Fig. 2 is the schematic diagram that 4 transmission gates and 4 not gates constitute a frequency-halving circuits, according to the connection in Fig. 2, when Clock input is often triggered by clock pulses twice, and output end is then restored to original logic state, i.e., with two divided-frequency Function, the wherein specific annexation between transmission gate NAND gate as seen from Figure 2, QA, QB are lead-out terminal.

Fig. 3 is the schematic diagram that oscillating circuit is connected with 16 frequency-halving circuits, the 3.2768MHz square waves that oscillating circuit is produced 50Hz square-wave signals are obtained at QA, QB end after 16 times divide, as shown in figure 3, at any time, being obtained in QA, QB end Square wave amplitude is identical, and opposite in phase.Compared to Figure 1, due to 4 not gates and 4 transmission gates are constituted into one two points in Fig. 3 Frequency circuit, and 16 frequency-halving circuits are sequentially connected such that it is able to the line in facilitating chip, be easy to chip volume reduce and Changed during damage.Two kinds of circuits in Fig. 1 and Fig. 3 can produce the square-wave signal of 50Hz.But the circuit of Fig. 1 needs 33 IC chip, thus trouble point is very more.And the circuit only one of which IC chip of Fig. 3, changed during failure Chip.

Fig. 4 is the structural representation of transmission gate, cmos transmission gate in CD4066 by a P-channel enhancement type metal-oxide-semiconductor and One enhanced metal-oxide-semiconductor of N-channel is formed in parallel.Carried by the input and output of not gate when the control signal of cmos transmission gate For when just constitute a bilateral analog switch.

Fig. 5 a are the schematic diagram that cmos transmission gate NAND gate constitutes analog switch, and Fig. 5 b are four two-way moulds in CD4066 Intend the schematic diagram of switch, wherein, the schematic diagram of four bilateral analog switch is respectively TG1, TG2, TG3 and TG4,5,6,12 and 13 Pin is control end.

Fig. 6 is the equivalent circuit diagram of CMOS not gates, and driving tube therein is NMOS tube, and load pipe is PMOS.

The schematic appearance of the 50Hz symmetrical complement time base circuit chips that Fig. 7 is provided for the utility model, crystal oscillator inserted terminal Sub- X₁、X₂For grafting crystal oscillator X.

One of ordinary skill in the art will appreciate that：Accompanying drawing is the schematic diagram of one embodiment, module in accompanying drawing or Flow is not necessarily implemented necessary to the utility model.

One of ordinary skill in the art will appreciate that：The module in device in embodiment can be according to embodiment description point It is distributed in the device of embodiment, it is also possible to carry out respective change and be disposed other than in one or more devices of the present embodiment.On Stating the module of embodiment can merge into a module, it is also possible to be further split into multiple submodule.

Finally it should be noted that：Above example is only used to illustrate the technical solution of the utility model, rather than its limitations； Although being described in detail to the utility model with reference to the foregoing embodiments, it will be understood by those within the art that： It can still be modified to the technical scheme described in previous embodiment, or which part technical characteristic is equal to Replace；And these modifications or replacement, the essence of appropriate technical solution is departed from the utility model embodiment technical scheme Spirit and scope.

Claims

1. a kind of 50Hz symmetrical complements time base circuit chip, for producing the 50Hz square-wave signals used for inverter, its feature It is, including the semi-conductor silicon chip of shell and enclosure, oscillating circuit and frequency dividing circuit, wherein：

The shell is provided with DC power anode terminal, DC power cathode terminal, crystal oscillator inserting terminal and lead-out terminal, by The lead-out terminal produces 50Hz square-wave signals；

The oscillating circuit and the frequency dividing circuit are arranged on the semi-conductor silicon chip, and the frequency dividing circuit and the vibration are electric Road connects；

The oscillating circuit includes a crystal oscillator, a resistance, an electric capacity and two not gates, wherein, the frequency of the crystal oscillator is 3.2768MHz, the crystal oscillator inserts the crystal oscillator inserting terminal by outside, and the resistance of the resistance is 4.7k, the electric capacity Capacitance is 100p, and the oscillating circuit is used for the square wave for producing frequency to be 3.2768MHz；

The frequency dividing circuit includes 16 frequency-halving circuits, and each frequency-halving circuit includes four not gates and four transmission gates, The frequency dividing circuit obtains 50Hz square waves after 16 two divided-frequencies are carried out to 3.2768MHz square waves.

2. 50Hz symmetrical complements time base circuit chip according to claim 1, it is characterised in that the not gate in oscillating circuit It is with the not gate in frequency-halving circuit and is realized using CD4069.

3. 50Hz symmetrical complements time base circuit chip according to claim 1, it is characterised in that the biography in frequency-halving circuit Defeated door is to be realized using CD4066.