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Патент USA US2409152

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0a‘ 3, 1946.,
'
D. H. ROGéRS
'.
2,409,151
ELECTRICAL REGULATING DEVICE
Filed Feb. 2,- 194a
,
INVENTOR.
>
D. H Ease/2s ’
BY
Arron/v5)’
2,409,151
Patented Oct. 8, 1946
; fU‘N-I’TED‘ STATE-S PATENT ] oer-"ice } ]
2,409,151
E's-sermon nEGULAfrING ‘DEVICE
inonaia‘n.
‘Western ‘Rogers,
1 Electric Jersey
=Company,
City,Incorporated,
J., 'assignor
New
Yorlcl‘l.v Y., a comet ation-of New York
Application February 2, 19431, lseriai‘no. 1414,4117
, 1; Claims. (014114312)
This invention relates to electrical regulating 7
devices and more particularly tofa voltage regu
lating- device.
'
'
An object of the invention is toprovide an ef
the Voltage‘ will tend to drop due to the'impédance
9 andthe impedance of ‘the vsupply circuit; This '
will decrease the ‘potential applied to the .plate
of the tube 10 and the potential applied'to the
neon tubes is similarly reduced. This latter
causes, at the same time, a reduction'in the'po
In accordance with one embodiment of this
tential applied to the grid of the tube 10 and,
invention, a voltage regulating device for a cur
while this reduction is substantially in the same
rent supply circuit may be provided comprising a
proportion as the reduction in the voltage applied
zero bias triode vacuum tube connected across the
to the plate of the tube, because of the amplifying
current supply circuit and one or more inter 10 effect of the triode tube, the reduction in the
connected gas discharge tubes connected across
voltage on the grid causes a greatly ampli?ed re
the plate and grid of the tube.
duction in the current shunted by the tube, thus
Other objects and advantages of this inven
tending to compensate for the increased load on
tion will be apparent from the following detailed
the output terminals. An output resistor I! may
description taken in conjunction with the draw
be connected in parallel with the output of this
ing wherein the single ?gure shows a circuit dia
power supply circuit.
gram of a voltage regulating system constructed
Since the voltage drop in the supply circuit, in
in accordance with one embodiment of this in
cluding the choke 9, is a function of the current
vention.
through it, it will be apparent that as the load
For some purposes in electrical apparatus and
increases and, consequently, the output voltage
particularly in radio apparatus, it may be desir
tends to decrease, the current ?owing across the
able to maintain a substantially constant voltage
triode tube is reduced in greater ratio than the
at varying current loads. The circuit shown and
output voltage, thereby reducing the current
described herein provides a substantially constant
?owing through the supply circuit, and, conse
voltage over a wide range of operating conditions,
quently, tending to compensate for the falling off
the operating range being readily variable by
of the output voltage due to the increase in the
increasing or reducing the number of gas dis
load. On the other hand, as the load decreases
charge tubes in the grid circuit.
and the output voltage tends to increase, the grid
Referring now to the drawing, a current recti
circuit becomes more positive with respect to the
30
fying and regulating circuit is there shown con
cathode in the triode tube Ill and more current
nected to an alternating current supply through
will flow between the plate and the cathode,
a transformer 5. A full wave recti?er tube 6, of
thus increasing the current ?owing through the
standard design, is connected to the secondary of
supply circuit. Consequently, the voltage drop
the transformer 5 and a, pair of ?lter condensers
in the supply circuit will increase and tend to
1 and 8 are connected in parallel with the output
compensate for the rise in voltage due to the de
of the recti?er tube. A ?lter choke 9 is connected
crease in the load. In practice the output volt
in series on the positive side of the recti?ertube.
age will remain substantially constant over a wide
A triode tube In, having a high ampli?cation
range of loads.
factor, is connected in parallel with the output of
By increasing or reducing the number of neon
the recti?er 6, as shown in the drawing, and four
tubes in the grid circuit, it will be apparent that
neon tubes H of the type that have no resistance
the operating range may be altered considerably,
in the base and which have a suitable watt rat
a larger number of tubes being used where higher
ing are interconnected in. series and shunted
voltages are desired. For this purpose a switch
across the plate and the grid of the trlode tube,
l5 ls provided to remove the fourth neon tube
thus providing a relatively lower voltage on the 45 from the circuit if required.
grid than on the plate of the tube. When employ
While but one embodiment of this invention has
ing a su?icient number of series connected neon
been shown and described, it will be understood
tubes, the tubes present a very high resistance.
that many changes and modi?cations may be
However, because of the extremely low current,
made therein without departing from the spirit
50
the IR drop across the tubes is proportionately
and scope of the present invention.
small and, thus, somewhat less voltage is applied
What is claimed is:
to the grid of the tube l0 than is applied to the
1. A voltage regulating device comprising a
fective voltage regulating device.
plate.
In the operation of this circuit, when an in
current supply circuit having impedance, a triode
tube connected across said supply, and a neon
creased load is taken from the output terminals, 55
2,409,151
tube connected between the grid and the plate
of said tube.
2. A voltage regulating device for a circuit hav
ing an impedance therein comprising a translat
ing device having an anode and cathode connected
in shunt across said circuit, and a grid circuit
including ‘a. gas discharge device connected to
said anode whereby the grid voltage will vary in
a plate, a grid and a cathode, and a grid circuit
including a neon tube connected to the negative
side of said impedance for maintaining the volt
age on said grid below the voltage on said plate,
the voltage drop due to said impedance being
variable with the current flowing in said trans
lating device,
5. A voltage regulating device comprising a
accordance with the variation of the anode volt
current supply circuit having impedance, a trans
age to maintain a substantially constant volt
10 lating device connected in parallel with said cur
age in the circuit being regulated.
rent supply, said translating device comprising a
3. A voltage regulating device comprising a
plate, a grid, and a cathode, and means for main
current supply circuit having impedance, a trans
taining the voltage on said grid below the volt
lating device connected in parallel with said cur
age on said plate, said means including a gas
rent supply, a grid associated with said trans
discharge device, the voltage drop due to said
lating device for controlling the amount of cur
impedance being variable with the current ?ow
rent shunted thereby, and a grid circuit includ
ing in said translating device.
ing a neon tube connected to the negative side of
6. A device to regulate the voltage of a. circuit
said impedance the amount of current shunted
increasing with increasing voltage, the voltage
drop due to said impedance being variable with
the current flowing in said translating device.
4. A voltage regulating device comprising a
current supply circuit having impedance, a trans
lating device connected in parallel with said cur
rent supply, said translating device comprising
having impedance, the device comprising a tube
having a plate connected to one side of the cir
cuit and a cathode connected to the other side
of the circuit and a grid between the plate and
the cathode, and a neon tube connected at one
side to the grid and at the other side to that side
of the circuit to which the plate is connected.
DONALD H. ROGERS.
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