SINGLE-ENDED
HAMMOND TRANSFORMERS -
Expanded Data by LONDON POWER


• POUT RMS audio output power for rated frequency bandwidth
• ZPRI Total primary impedance with nominal rated load; ZA on single-ended units;
  ZAA on push-pull units
• IRATED DC current rating for SE winding, or for each side of push-pull winding
• ESIGNAL Peak audio signal voltage across full SE winding or each half of push-pull winding
  for rated audio output
• ISIGNAL Peak audio signal current through full SE winding or one half of push-pull winding
  for rated audio output
• VSUGG Suggested DC plate supply voltage; SE assumes cathode-biased operation:
  PP assumes fixed-bias operation
• VA Minimum plate supply power requirement
• Mass Weight in pounds; old tabled value; most units are slightly lighter at the time of writing

SE Single Ended 100-15kHz 1dB

Ham# POUT ZPRI IRATED ESIGNAL ISIGNAL VSUGG VA Mass
125ASE 3WRMS 2,500A 25mADC 123Vpk 49mApk 174VDC 8.7VA 0.2 lbs
    5k A " 173Vpk 35mApk 246VDC 8.7VA  
    10k A " 245Vpk 25mApk 346VDC 8.7VA  
125BSE 5WRMS 2,500 ΩA 45mADC 158Vpk 63mApk 224VDC 14.2VA 0.3 lbs
    5kA " 224Vpk 23mApk 316VDC 14.2VA  
    10kA " 316Vpk 32mApk 448VDC 14.2VA  
125CSE 8WRMS 2,500A 60mADC 200Vpk 80mApk 283VDC 22.7VA 0.5 lbs
    5kA " 283Vpk 57mApk 400VDC 22.7VA  
    10kA " 400Vpk 40mApk 480VDC 22.7VA  
125DSE 10WRMS 2,500A 70mADC 224Vpk 90mApk 316VDC 28.4VA 1.0 lbs
    5kA " 316Vpk 63mApk 448VDC 28.4VA  
    10kA " 448Vpk 45mApk 550VDC 28.4VA  
125ESE 15WRMS 2,500A 80mADC 273Vpk 110mApk 386VDC 42.5VA 1.5 lbs
    5kA " 386Vpk 77mApk 546VDC 42.5VA  
    10kA " 546Vpk 56mApk 672VDC 42.5VA  
tapped secondary, see diagram

               

SE Single Ended 20-20kHz ± 1dB at rated output

Ham# POUT ZPRI IRATED ESIGNAL ISIGNAL VSUGG VAMIN Mass
1627SE 25WRMS 2,500A 160mADC 353Vpk 141mApk 500VDC 70VA 11 lbs
1628SE 25WRMS 5,000A 120mADC 500Vpk 100mApk 700VDC 70VA 11 lbs
1629SE 25WRMS 6,500A 100mADC 570Vpk 88mApk 800VDC 70VA 11 lbs
1640SE 25WRMS 1,250A 200mADC 250Vpk 200mApk 353VDC 70VA 11 lbs
1642SE* 75WRMS 5,000A 300mADC 866Vpk 173mApk 1k2VDC 212VA 28 lbs
*no UL tap; 4-8-16 taps on single secondary, see diagram

               

Next Page: PP Push-pull transformers

London Power Homepage



LONDON POWER/POWER PRESS
PO BOX 10012
THUNDER BAY, ONTARIO, CANADA  P7B 6T6
807-473-0952  11:00-18:00 EST