> SOWTER 1290 ac coupled cathode follower Output Transformer for OPTO4/5 (LA-2A) Compressor SOWTER AUDIO TRANSFORMERS
OUTPUT TRANSFORMER for Pulteq EQP-1A

Sowter Type 1290 - BUY
AC coupled cathode follower Output Transformer for OPTO4/5 (LA-2A) Compressor

FREQUENCY RESPONSE

Typical response 2000 Ohms source 600 Ohm load

Sowter 1290 Frequency response

CONNECTIONS

 

9530 connections

PACKAGE OPTIONS

Available with and without Mumetal can. See here:

Sowter package styles

 

 

APPLICATION

For use in a high performance valve compressor/amplifier etc for driving a balanced line from an ac coupled cathode follower or SRPP circuit.  Similar to UTC A24 and Triad HS-50 (in overall 5:1 configuration) but with improved bandwidth. Introduced to provide a mumetal can option to our type 1010. Suitable for the Drip OPTO 4 and OPTO 5 (LA-2A) PCB.

FEATURES

Combination core using Mumetal 30% and high grade M6 Grain Oriented Silicon Iron (70%) for high level capability whilst ensuring minimal distortion particularly at mid and high frequencies. Exceptional bandwidth. Colour coded leads. Mounting with Threaded Grommet.
RATIO
5 : 1
MAXIMUM OUTPUT LEVEL 0.5 % THD at 50 Hz
+30 dBu
DISTORTION at 50 Hz (Source 40 ohms)
0.05% at +20 dBu
PRIMARY INDUCTANCE
97H
FREQUENCY RESPONSE 2kOhm source 600 ohm load
+/- 0.5 dB 10 Hz to 100 kHz typical
MAXIMUM PRIMARY DC per side
0 mA
DCR (Primary)
176 ohms
DCR (Secondary)
25 Ohms
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