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Vintage Stancor A 3856 Output Transformer NOS NIB Tube Amplifier Part
Vintage Stancor A 3856 Output Transformer NOS NIB Tube Amplifier Part


Stancor Filter Choke C 1708 New Old Stock Ham Radio stuff
Stancor Filter Choke C 1708 New Old Stock Ham Radio stuff


Stancor PC8412 PC 8412 Power Transformer for Tube Amp Amplifier
Stancor PC8412 PC 8412 Power Transformer for Tube Amp Amplifier


VINTAGE NIB WF 22 INPUT TRANSFORMER CHICAGO STANCOR NEW OLD STOCK NR
VINTAGE NIB WF 22 INPUT TRANSFORMER CHICAGO STANCOR NEW OLD STOCK NR


Stancor POWER TRANSFORMER for high end tube preamplifier DIY project
Stancor POWER TRANSFORMER for high end tube preamplifier DIY project


Stancor PC 8406 Tube Amp Power Transformer NOS NIB 650 5 63 Volts
Stancor PC 8406 Tube Amp Power Transformer NOS NIB 650 5 63 Volts


STANCOR A 3869 OUTPUT TRANSFORMER
STANCOR A 3869 OUTPUT TRANSFORMER


NOS NIB Stancor PC 8409 60Cycle Power Transformer for Fender Tube Guitar Amp
NOS NIB Stancor PC 8409 60Cycle Power Transformer for Fender Tube Guitar Amp


New Stancor Transformer P 8618
New Stancor Transformer P 8618


V45 1 1 NIB STANCOR P 8628 CONTROL TRANSFORMER
V45 1 1 NIB STANCOR P 8628 CONTROL TRANSFORMER


Stancor A 4351 Input Transformer for Tube Amplifier
Stancor A 4351 Input Transformer for Tube Amplifier


STANCOR ESSEX P 8648 Filament Transformer For Vintage Video Arcade Atari Parts
STANCOR ESSEX P 8648 Filament Transformer For Vintage Video Arcade Atari Parts


2 New In Box Vintage Stancor Model P 6469 Filament Transformer
2 New In Box Vintage Stancor Model P 6469 Filament Transformer


Jet City JCA20 Output Transformer EL84 20 Watt Tube Amp Like Stancor a 3311
Jet City JCA20 Output Transformer EL84 20 Watt Tube Amp Like Stancor a 3311


Stancor GIS 500 isolation transformer 115V 500VA New in Box
Stancor GIS 500 isolation transformer 115V 500VA New in Box


Stancor P 8618 Transformer 115 230V Input 24 48V Output
Stancor P 8618 Transformer 115 230V Input 24 48V Output


STANCOR ISOLATION TRANSFORMER MODEL GIS 100 NEW
STANCOR ISOLATION TRANSFORMER MODEL GIS 100 NEW


STANCOR P 8685 TRANSFORMER 115 PRIMARY VOLTS NOS in box
STANCOR P 8685 TRANSFORMER 115 PRIMARY VOLTS NOS in box


P 8193 STANCOR TRANSFORMER
P 8193 STANCOR TRANSFORMER


Vintage STANCOR Standard Transformer Corp Part No 52B041 Transformer 1
Vintage STANCOR Standard Transformer Corp Part No 52B041 Transformer 1


STANCOR MODEL P 6138 POWER TRANSFORMER NEW OLD STOCK
STANCOR MODEL P 6138 POWER TRANSFORMER NEW OLD STOCK


STANCOR P 8035 Plate Transformer for 25K or 2K VDC 500ma  80Lbs of power
STANCOR P 8035 Plate Transformer for 25K or 2K VDC 500ma 80Lbs of power


V46 1 1 USED STANCOR P 8362 CONTROL TRANSFORMER
V46 1 1 USED STANCOR P 8362 CONTROL TRANSFORMER


Stancor PC 8401 Power Transformer for Tube Amplifier
Stancor PC 8401 Power Transformer for Tube Amplifier


STANCOR P 6429 FILAMENT TRANSFORMER USED
STANCOR P 6429 FILAMENT TRANSFORMER USED


V46 1 1 NIB STANCOR P 8362 CONTROL TRANSFORMER
V46 1 1 NIB STANCOR P 8362 CONTROL TRANSFORMER


NIB Stancor A 3839 10K Opt Transformer for Tube Amplifier
NIB Stancor A 3839 10K Opt Transformer for Tube Amplifier


Transformer Power P 6478 Chicago Standard Primary 6 Volts Secondaries 225 V Vtg
Transformer Power P 6478 Chicago Standard Primary 6 Volts Secondaries 225 V Vtg


Stancor Dual 12V Filament Transformer P6434 NIB
Stancor Dual 12V Filament Transformer P6434 NIB


QUAD NOS Stancor A 4350 Microphone or Line to Line Input Transformers
QUAD NOS Stancor A 4350 Microphone or Line to Line Input Transformers


NIB LOT OF 2 STANCOR P 8364 TUBE AMP CONTROL TRANSFORMERS FREE SHIPPING
NIB LOT OF 2 STANCOR P 8364 TUBE AMP CONTROL TRANSFORMERS FREE SHIPPING


Vintage Stancor CRT Transformer P 8151 Used wt 2X2 Rectifier Tube half wave ckt
Vintage Stancor CRT Transformer P 8151 Used wt 2X2 Rectifier Tube half wave ckt


STANCOR P 8609 TRANSFORMER 117V NEW OUT OF A BOX
STANCOR P 8609 TRANSFORMER 117V NEW OUT OF A BOX


Stancor p 8150 1550vac 15ma25vac175a power transformer oscilloscope NOS
Stancor p 8150 1550vac 15ma25vac175a power transformer oscilloscope NOS


SINGLE TUBE OUT PUT TRANSFORMER
SINGLE TUBE OUT PUT TRANSFORMER


Stancor A 3852 18W Universal Tube Amp Output Transformer A3852
Stancor A 3852 18W Universal Tube Amp Output Transformer A3852


NIB Vintage STANCOR ELECTRONICS Part No P 5016 Filament Transformer
NIB Vintage STANCOR ELECTRONICS Part No P 5016 Filament Transformer


New Stancor Power Transformer P6378
New Stancor Power Transformer P6378


STANCOR P 3064 6A AMP 117V AC 63V AC TRANSFORMER D387461
STANCOR P 3064 6A AMP 117V AC 63V AC TRANSFORMER D387461


STANCOR MASSIVE TRANSFORMER 52C084 1944 PULL MASSIVE IRON GOOD FOR XMITTER
STANCOR MASSIVE TRANSFORMER 52C084 1944 PULL MASSIVE IRON GOOD FOR XMITTER


The main advantage of alternating currents over direct currents is that, the alternating currents can be easily transferable from low voltage to high or high voltage to low. Alternating voltages can be raised or lowered as per requirements in the different stages of electrical network as generation, transmission, distribution and utilization. This is possible with a static device called transformer. The transformer works on the principle of mutual induction. It transfers an electric energy from one circuit to other when there is no electrical connection between the two circuits. Thus we can define transformer as, the transformer is a static piece of apparatus by means of which an electrical power is transformed front one alternating current circuit to another with the desired change in voltage and current, without any change in the frequency.

Principle of Working

The principle of mutual induction states that when two coils are inductively coupled and if current in one coil is changed uniformly then an e.m.f. gets induced in the other coil. This e.m.f. can drive a current, when a closed path is provided to it. The transformer works on the same principle. In its elementary form, it consists of two inductive coils which are electrically separated but linked through a common magnetic circuit. The two coils have high mutual inductance. One of the two coils is connected to a source of alternating voltage. This coil in which electrical energy is fed with the help of source is called primary winding. The other the transformer works on the principle of mutual induction, for which current in one coil must change uniformly.

If D.C. supply is given, the current will not change due to constant supply and transformer will not work. Practically winding resistance is very small. For D.C., the inductive reactance is zero as D.C. has no frequency. Thus winding will draw very high current if D.C. supply is given to it. This may cause the burning of windings due to extra heat generated and may cause permanent damage to the transformer. There can be saturation of the core due to which transformer draws very large current from the supply when connected to d.c. Thus D.C. supply should not be connected to the transformers. There are two basic parts of a transformer
  1. Magnetic Core
  2. Winding or Coils.

 It is further divided into two parts. The vertical portion on which coils are wound is called limb while the top and bottom horizontal portion is called yoke of the core. Core is made up of laminations. Because of laminated type of construction, eddy current losses get minimized. Generally high grade silicon steel laminations (0.3 to 0.5 mm thick] are used. These laminations are insulated from each other by using insulation like varnish BIN laminations are varnished. Laminations are overlapped so that to avoid the air gap at the joints.

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