Voltage regulator for generator used in automobile

Claim 2

A voltage regulator of a generator which compares the output voltage of the generator with a reference voltage and regulates the output voltage thereof comprising: a constant voltage source (20); first and second voltage dividers (91, 92 and 94, 95) for dividing the voltage of said constant voltage source (20); a series circuit consisting of a thermo-sensitive element (101, 102, 103) and a resistor (93) that are connected between the voltage division point of said first voltage divider (91, 92) and the positive or negative plates of said constant voltage source (20); a first rectifier (104) having one of the positive plates thereof connected to the voltage division point of said first voltage divider (91, 92); a first rectifier (105) having one of the positive plates thereof connected to the voltage division point of said second voltage divider (94, 95), and the other to the other of said first rectifier (104); and a third rectifier (106) having one of the plates thereof connected to the other plate of said first rectifier (104), and supplying said reference voltage (VR e f).

Claim 3

The voltage regulator of a generator according to claim 1 which further includes a first constant current source (26, 107) connected between the positive plate of said third rectifier (106) and the positive plate of said constant voltage source (20), and a second constant current source connected between the negative plate of said first rectifier (104) and the negative plate of said constant voltage source (20).

Claim 4

3 . A voltage regulator of a generator which compares the output voltage of the generator with a reference voltage and regulates the output voltage thereof comprising: a constant voltage source; second and third voltage dividers for dividing the voltage of said constant voltage source; a series circuit consisting of a plurality of resistors and a single or plurality of thermosensitive elements, and connected between the positive plate and negative plate of said constant voltage source; a first rectifier having the positive plate thereof connected to one point in said series circuit; a second rectifier having the positive plate thereof connected to a voltage division point of said second voltage divider, and having the negative plate thereof connected to the negative plate of said first rectifier; a third rectifier having the negative plate thereof connected to the negative plate of said first rectifier; a fourth rectifier having the negative plate thereof connected to the positive plate of said third rectifier; a fifth rectifier having the negative plate thereof connected to the negative plate of said fourth rectifier; and a sixth rectifier having the positive plate thereof connected to the positive plate of said fifth rectifier, and supplying said reference voltage from the negative plate thereof .

Claim 5

3 . A voltage regulator of a generator which compares the output voltage of the generator with a reference voltage and regulates the output voltage thereof comprising: a constant voltage source; second and third voltage dividers for dividing the voltage of said constant voltage source; a series circuit consisting of a plurality of resistors and a single or plurality of thermosensitive elements, and connected between the positive plate and negative plate of said constant voltage source; a first rectifier having the positive plate thereof connected to one point in said series circuit; a second rectifier having the positive plate thereof connected to a voltage division point of said second voltage divider, and having the negative plate thereof connected to the negative plate of said first rectifier; a third rectifier having the negative plate thereof connected to the negative plate of said first rectifier; a fourth rectifier having the negative plate thereof connected to the positive plate of said third rectifier; a fifth rectifier having the negative plate thereof connected to the negative plate of said fourth rectifier; and a sixth rectifier having the positive plate thereof connected to the positive plate of said fifth rectifier, and supplying said reference voltage from the negative plate thereof .

Claim 6

The voltage regulator of a generator according to claim 3 which furthen includes a first constant current source connected between the positive plate of said fourth rectifier and the positive plate of said constant voltage source, a second constant current source connected between the negative plate of said first rectifier and the negative plate of said constant voltage source, and a third constant current source connected between the negative plate of said sixth rectifier and the negative plate of said constant voltage source.

Claim 7

5 . The voltage regulator of a generator according to claim 3 wherein the current value of said second constant current source is set to be about twice that of said first constant current source .

Claim 8

6 . The voltage regulator of a generator according to claim 4 wherein the current value of said first constant current source is substantially equal to that of said second constant current source, and the current value of said third constant current source is half that of said first constant current source.

Claim 9

7 . A voltage regulator for a car a .c . generator consisting of a generator which is driven in response to the revolution of an engine and charges a battery and a voltage regulation circuit for controlling the voltage of said battery to a predetermined value, comprising: a group of a plurality of voltage division circuits for dividing the voltage generated by said generator; a first group of a plurality of rectifiers each having the positive plate thereof connected to each voltage division point of said voltage division circuit group and the negative plate thereof connected in common to a control transistor; and a second group of a plurality of rectifiers each having the negative plate thereof connected to the negative plates of said rectifiers of said first group and to said control transistor, and having the positive plate voltage thereof being controlled to a predetermined value .

Claim 10

7 . A voltage regulator for a car a .c . generator consisting of a generator which is driven in response to the revolution of an engine and charges a battery and a voltage regulation circuit for controlling the voltage of said battery to a predetermined value, comprising: a group of a plurality of voltage division circuits for dividing the voltage generated by said generator; a first group of a plurality of rectifiers each having the positive plate thereof connected to each voltage division point of said voltage division circuit group and the negative plate thereof connected in common to a control transistor; and a second group of a plurality of rectifiers each having the negative plate thereof connected to the negative plates of said rectifiers of said first group and to said control transistor, and having the positive plate voltage thereof being controlled to a predetermined value .

Claim 11

The voltage regulator according to claim 1 which further includes a first constant current source connected to the positive plates of said second rectifiers and a second constant current source connected to the negative plates of said second rectifiers .

Claim 12

9 . The voltage regulator according to claim 2 wherein the current value of said second constant current source is set to be double that of said first constant current source .