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P.M. H.T. Supply Unit

P.M. H.T. Supply Unit ; Mullard Radio Valve (ID = 2155092) Power-S P.M. H.T. Supply Unit ; Mullard Radio Valve (ID = 2155093) Power-S
P.M. H.T. Supply Unit ; Mullard Radio Valve (ID = 2155094) Power-S P.M. H.T. Supply Unit ; Mullard Radio Valve (ID = 2155095) Power-S
P.M. H.T. Supply Unit ; Mullard Radio Valve (ID = 2155096) Power-S P.M. H.T. Supply Unit ; Mullard Radio Valve (ID = 2155097) Power-S
P.M. H.T. Supply Unit ; Mullard Radio Valve (ID = 2155098) Power-S P.M. H.T. Supply Unit ; Mullard Radio Valve (ID = 2155099) Power-S
P.M. H.T. Supply Unit ; Mullard Radio Valve (ID = 2155100) Power-S P.M. H.T. Supply Unit ; Mullard Radio Valve (ID = 2155101) Power-S
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P.M. H.T. Supply Unit ; Mullard Radio Valve (ID = 2155092) Power-S
Mullard Radio Valve: P.M. H.T. Supply Unit [Power-S] ID = 2155092 1400x1866
Select picture or schematic to display from thumbnails on the right and click for download.
For model P.M. H.T. Supply Unit, Mullard Radio Valve Co. Ltd.; :
Front view
 
Country:  Great Britain (UK)
Manufacturer / Brand:  Mullard Radio Valve Co. Ltd.;
Year: 1927 Category: Power supply/conditioner or battery or charger 
Valves / Tubes 1: 506
Wave bands - without
Details Power Supply (not only Batt.El.)
Power type and voltage Alternating Current supply (AC) / 200-215 Volt
Loudspeaker - - No sound reproduction output.
Power out
from Radiomuseum.org Model: P.M. H.T. Supply Unit - Mullard Radio Valve Co. Ltd.;
Material Bakelite, TUBES VISIBLE
Shape Tablemodel, with any shape - general.
Dimensions (WHD) 122 x 166 x 197 mm / 4.8 x 6.5 x 7.8 inch
Notes

Mullard H.T. Supply Unit for A.C. mains with full wave rectification from a Philips 506 Full-Wave rectifying valve, providing four different H.T. supplies to replace the H.T. battery in battery-powered receivers.

Advertisement in Wireless World magazine, September 28th 1927:  "P.M. H.T. Supply Unit. – For use with an A.C. supply and provided with full-wave rectification, the P.M. H.T. supply unit is very similar to that formerly marketed by the Philips Company, and therefore carries the reputation of being thoroughly reliable.  A modification is the provision of four H.T. tapping points effected by potential dividing across a resistance.  The top of the instrument is a clean moulding, there are no parts of the circuit exposed from which shocks might be obtained, and the containing box is of metal supported on rubber feet.  The price of the complete unit is £7 10s.  A maximum potential of 180 volts is obtained on a load of 10 miiliamperes, a reduction of about 2.5 volts occurring for an increase of 1 milliampere load up to the permissible load of 40 mA."

Directions:  A warning at the bottom of the Directions plate attached to the unit advises the user not to switch on the A.C. supply before making the connections to the receiver.  It is likely that with the power supply unloaded the H.T. outputs could rise to a level which might damage the receiver.

 

 

Net weight (2.2 lb = 1 kg) 4.4 kg / 9 lb 11.1 oz (9.692 lb)
Price in first year of sale 7.10 £
Mentioned in -- Original prospect or advert (Wireless World, September 28th 1927)

Model page created by Nick Hayward. See "Data change" for further contributors.



All listed radios etc. from Mullard Radio Valve Co. Ltd.;
Here you find 3 models, 3 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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