INTERSTAGE TRANSFORMERS FOR VALVE TUBE AMPLIFIERS

9525 Exceptional Bandwidth Interstage Transformer for SE to SE .
Primary 20K ohms 50 Henry 50 mA dc. Secondary 20K. Bifilar winding ensures typically 75 KHz bandwidth. For use with SE drive to SE power stages. Must be used in non-inverting mode. Maximum applied dc voltage primary to secondary should not exceed 300 V. Fully shrouded package colour coded leads. Size H.
Data sheet
Price: £127.21

8423 Interstage Transformer for SE to SE or PP
Primary 5k ohms 25 Henry 50 mA dc. Two equal 5k ohms secondaries which can be used separately, in series or in parallel. For use with SE drive to SE or PP power stages. Full geometric balance for near perfect phase splitting. Fully shrouded package colour coded leads. Size H.
Data sheet
Price: £127.21

8424 Interstage Transformer for SE to SE or PP
Primary 20k ohms 70 Henry 30 mA dc. (series) or 5k ohms 18 Henrys 100 mA (parallel). Two equal 5k ohms secondaries which can be used separately, in series or in parallel. For use with SE drive to SE or PP power stages. Full geometric balance for near perfect phase splitting. Fully shrouded package colour coded leads. Size H.
Data sheet
Price: £127.21

9100 100% Mumetal PP Interstage
Ratio 1+1:1+1 20k/20k 300 Henrys (series conected). 100% Mumetal core for very high impedance and minimal distortion. Up to 40 mA dc but unbalanced current should not exceed 0.25 mA. Suitable for parafeed pre amp etc. 80 kHz bandwidth Fully shrouded package colour coded leads. Size A. Optional heavy gauge Mumetal can (72 x 554 x 45mm).
Data sheet
Price: £134.06

Click for Mumetal can (£31.72

9090 50% Mumetal PP Interstage
Ratio 1.4 +1.4:1+1 20k/10k 300 Henrys (series connected) 50% Mumtal core for high impedance and high level capability. Up to 30 mA dc but 1.0 maximum unbalanced dc. 80 kHz bandwidth. 250 V p-p input level. Fully shrouded package colour coded leads.
Price: £125.23

9083 100% M6 PP Interstage
Ratio 1CT:1+1 10k/10k/10k 70 Henrys 75 mA (5 mA unbalanced) dc. Full geometric balance for near perfect phase splitting. 50 kHz bandwidth. Fully shrouded package colour coded leads. Size G
Data Sheet
Price: £127.21