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Патент USA US2407859

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Sept. 17, ‘£946.
w. M. SMITH
2,407,853
POWER SUPPLY REGULATING APPARATUS
Filed June 50, 1944
IN VEN TOR.
WMm’1522M
Wei/121$? a“,
'
2,407,853?
Patented Sept. 17, ‘5846
UNITED STATES PATENT OFFICE
2,407,853
POWER S‘Ul’PLY EEGULATING APPARATUS
‘Wolcott M. Smith, Spring?eld, Mass.
Application June 30, 1944, Serial No. 542,930
6 Claims. (C1. 171-4312)
1
This invention relates to power supply appa
ratus and is directed more particularly to direct
current power supply regulating apparatus.
The principal objects of the invention are di
rected to direct-current power supply regulating
apparatus characterized by means to facilitate
2
38 are connected to the secondary of a trans
former '46 by lines 13, 8t and 82.
Said trans
former may be connected to an A. C. line.
The apparatus may be used as the direct-cur
rent power supply regulator for radio apparatus
in which case the input may be connected to
recti?ed direct current and the output may be
regulating over wider ranges than heretofore
connected to those components to which power
known under various conditions of input, output
is to be supplied.
and load.
The voltage at the input is likely to vary or
10
The novel features of the invention are adapt
increase or decrease due to ?uctuations in the
ed for use in connection with radio apparatus
line or other causes. The tube it! may be termed
but the invention is not to be considered as so
limited since various changes and modi?cations
the regulator tube, in effect a controlled variable
resistor component in series with the load while
may be made to adapt the novel features of the
tube 38 operates as an ampli?er directly con
15
invention to various uses.
nected to the input grid it of tube It controlling
In the drawing:
its plate resistance.
'
The ?gure is a diagrammatic ?gure showing
Tube 24 provides a constant voltage drop be
the novel features of the invention.
tween cathode l2 and grid dB and it acts to
Referring now to the drawing more in detail,
maintain a voltage on said grid well below that
20
the invention will be fully described.
on plate 8 of tube Hi allowing greater ampli?ca
Input terminals 2 and ll at the input of the
tion through tube 33 than is ordinarily possible.
apparatus are adapted for connection to a D. C.
The device 24 faithfully reproduces voltage
recti?er or other means for supplying direct cur—
variations at grid big as they occur in line H
rent which, as is well known, is likely to ?uctuate
thereby to provide improved regulation. Con
in voltage. Such ?uctuations are very objec 25
denser 18 with resistances 54 and 56 have a time
tionable in connection with radio apparatus.
factor greater than any other part of the ap
Terminal 2 is connected by 6 to a plate 8 of a
paratus and provides a relatively constant volt
vacuum tube l6. Terminal 55 is connected by H
age drop from cathode 52 to ground.
to ground. A cathode E2 of tube it is connected
As voltage changes occur either at the input
by M to a high voltage terminal 45 of the output 30 or with load variations, the voltage at the output
of the apparatus.
of tube t9 tends to simultaneously change.
Grid E8 of tube it! is connected by 2!! to a plate
Changes are carried to grid 4%] of tube 38 where
22 of a vacuum tube 38. A connection 25 which
the flow of electrons changes directly and pro
includes a resistance 23 extends from plate 212
portionally. This electron flow is carried
to line 6. A ?xed condenser 35] is connected to 35 through resistance 28 and causes inversion of
6 and 26 by-passing resistance 28.
and amplification of the rate of voltage changes
A connection 35, including a constant drop
occurring at grid M of tube 33 to, roughly, mu
voltage device 24, extends from M to a grid iii)
times the rate of grid voltage change.
of tube 38 and said grid is connected to terminal
This inverted ampli?er voltage is applied to
42 at the output side of the apparatus, as shown. 40
the
grid it of tube It and causes the electron
The constant voltage drop device 24 may take
flow from the cathode 52 to plate 3 of tube it!
various forms but in the form of the invention
thereby to vary proportionally.
shown represents a gas diode with the anode and
This change is in opposition to the original
cathode thereof indicated by 45‘: and 58. A nega
tendency for the output voltage to change, occurs
tive terminal at the output of the apparatus is
instantly and therefore prevents any but an en
represented at 55 and is connected to ground.
tirel;7 minute variation to occur.
A cathode 52 of tube 38 is connected to the
lower, output voltage is made avail
movable arm of a resistance unit 55! as shown.
able at grid it of tube 33 through the constant
Resistances 5t and 58 are connected to resistance
voltage device 2d. This output carries the same
54 and ground by 69 and to said resistance 5%
absolute regulation present at the cathode of tube
and line M by 62. A connection (it between grid
it, since the device ‘it is made to have a constant
40 of tube 38 and ground includes resistance 55.
voltage
drop.
Cathode 52 of tube 24 is connected by E53 to
The invention may be embodied in other speci?c
ground through a fixed condenser ‘Ill.
Heaters or ?laments l2 and 14 of tubes ii! and 55. forms without departing from the essential char
2,407,853
acteristics thereof. Hence, the present embodi
ments are therefore to be considered in all respects
merely as being illustrative and not as being re
strictive, the scope of the invention being indi
cated by the appended claims rather than by
the foregoing description, and all modi?cations
and variations as fall within the meaning and
purview and range of equivalency of the appended
claims are therefore intended to be embraced
therein.
What it is desired to claim and Secure by Letters
Patent of the United States is:
l. Direct-current power supply voltage regu
lating apparatus having an input and both high
and low voltage outputs comprising in combina
tion, regulating and amplifying tubes having
plates, grids, and cathodes, a constant voltage
drop device, a connection between the cathode
of the ?rst-named tube, said device and high
voltage output, a connection between the grid
of the second-named tube, low voltage output
4
voltage outputs comprising in combination, regu
lating and amplifying tubes having plates, grids,
and cathodes, a constant voltage drop device,
a connection between the cathode of the ?rst
named tube, one side of said device and high
voltage output, a connection between the grid
of the second-named tube, low voltage output,
and the low voltage side of the device, a con~
nection between the plate of the ampli?er tube
10 and the grid of the regulating tube, and a con
nection between the plates of the ampli?er and
regulating tubes, including a resistance, a ground
in said input and outputs forming the neutral or
negative side thereof resistance means between
the high voltage output and ground and connec
tion between the cathode of said amplifying tube
and a tap on said resistance with a means for
varying the tap on said resistance, and connec
tions between the aforementioned cathode and a
condenser lay-passing the lower portion of the
resistance between the tap and the low potential
end of the circuit, a second voltage output being
available by this circuit arrangement through
and said device, a connection between the input
and plate of the regulating tube and between
the plates of the amplifying and regulating tubes
including a resistance, a ground in said input 25 the constant voltage device, and either output
being adjustable over a range determined by the
and outputs forming the neutral or negative side
limiting currents permissible through the regu
thereof resistance means connected between the
lating and amplifying tubes and the constant
high voltage output and ground and a connection
voltage device.
between the cathode of said amplifying tube and
5. Direct-current power supply voltage regu
resistance adapted for various positions on said 30
lating apparatus having an input and high and
resistance.
low voltage outputs comprising in combination,
2. Direct-current power supply voltage regulat
regulating and amplifying tubes having plates,
ing apparatus having an input and both high and
grids, and cathodes, a constant voltage device, a
low voltage outputs comprising in combination,
connection between the cathode of the ?rst~
regulating and amplifying tubes having plates,
named tube, one side of said device and high
grids, and cathodes, a constant voltage drop
voltage output, a connection between the grid
device, a connection between the cathode of the
of the second-named tube, low voltage output,
?rst-named tube, said device and high voltage
and
the low voltage side of said device, a connec
output, a connection between the grid of the
second-named tube, low voltage output and de 40 tion between the plate of the ampli?er tube and
the grid of the regulating tube and a connec
vice, a connection between the input and plate
tion between the plates of the amplifier and
of the regulation tube and between the plates of
regulating tubes including a resistance means,
the amplifying and regulating tubes including a
a ground in said input and outputs forming the
resistance, a ground in said input and outputs
neutral or negative side thereof connections be~
forming the neutral or negative side thereof re
v tween the high voltage output and ground and
sistance means connected between the high volt
connections between said amplifying tube and
age output and ground and a connection between
resistance with a means for varying a tap on said
the cathode of said amplifying tube and resistance
resistance, adjustment of said tap being equivalent
adapted for various positions on said resistance,
to an adjustable reference voltage, and connec
and connections including a condenser lay-passing
tions including a condenser to by-pass the cathode
said ?rst-named resistance.
of the said ampli?er tube to ground, a second
3. Direct-current power supply voltage regu
ouput being available by this circuit arrange
lating apparatus having an input and both high
and low voltage outputs comprising in combina
tion, regulating and amplifying tubes having
plates, grids, and cathodes, a constant voltage
drop device, a connection between the cathode of
the ?rst-named tube, said device and high voltage
ment through the constant voltage device, either
output being adjustable over a range determined
‘ by the limiting currents permissible through the
regulating and amplifying tubes and the constant
voltage device.
output, a connection between the grid of the
6. Direct current power supply voltage regulate
a resistance, a ground in said input and outputs
forming the neutral or negative side thereof re
sistance means connected between the cathode
a connection between the cathode of the ?rst»
named tube, one side of said device and high
voltage output, a connection between the grid of
ing apparatus having an input
high and
second~named tube, low voltage output and de
60
low
voltage
outputs
comprising
in
combination,
vice, a connection between the input and plate
regulating and amplifying tubes having plates,
of the regulation tube and between the plates
grids, and cathodes, a constant voltage device,
of the amplifying and regulating tubes including
of said amplifying tube and ground and includ—
ing an arm adapted for various positions on said
resistance, and connections including a con—
denser by-passing said ?rst-named resistance,
a second low voltage output being made available
by the circuit arrangement through the said
constant voltage drop device.
'4. Direct-current power supply voltage regu
the second-named tube, low voltage output, and
the low voltage side of said device, a connection
between the plate of the ampli?er tube and the
grid of the regulating tube and a connection be
tween the plates of the amplifier and regulating
tubes including a resistance, a ground in said
input and outputs forming the neutral or nega
tive side thereof resistance means connected be
tween the high voltage output and a ground and
lating apparatus having input and high and 10W 75
connection between said amplifying tube and
2,407,853
5
resistance including a means for varying a tap
on said resistance, adjustment of said tap being
equivalent to an adjustable reference voltage, and
connections including a condenser to icy-pass the
cathode of said amplifier tube to ground, the
combination of said condenser and said asso
ciated tapped resistor to provide a time factor
longer than that of any other portion or por
6
tions of the regulating device and thereby stabiliz
ing the aforementioned reference voltage, a second
output being available by this circuit arrange
ment, either output being adjustable over a range
determined by the limiting currents permissible
through the regulating and amplifying tubes and
the constant voltage device.
WOLCOTT lVI. SMITH.
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