Sowter Type 3678

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Sowter Type 3678 60,200,600 / 5K Multi-Purpose Input Transformer	PACKAGE OPTIONS	Part Number
	Coloured Leads	3678-F
	PCB Mounting	3678-C

APPLICATION Impedance matching and noise isolation for microphone inputs. Taps for switching to 60, 200, and 600 ohm inputs. Suitable for desks with an input impedance of 5k0 ohms and above. Bessel response (minimal overshoot) obtainable by connecting a 5k6 ohm resistor across secondary if used with higher impedance desks.
FEATURES Mumetal core for minimal harmonic distortion. Heavy gauge Mumetal can for magnetic shielding.
INPUT TAP:	60	200	600
RATIO	1:9	1:5	1:3
MAXIMUM LEVEL 0.5 % THD at 50 Hz (40 ohm source)	0 dBu	+6 dBu	+11 dBu
DISTORTION at 50 Hz (40 ohm source)	0.1% at -6 dBu	0.1% at +4 dBu	0.1% at +8 dBu
INSERTION LOSS	1.68 dB	1.34 dB	1.09 dB
INPUT/OUTPUT BALANCE	>50 dB	>50 dB	>50 dB
FREQUENCY RESPONSE (+/- 0.25 dB) 5k6 ohm load	15Hz to 45 kHz	15 Hz to 45 kHz	15Hz to 65 kHz
	Pin 6/Orange : 600 ohms Pin 5/Pink : 200 ohms Pin 4/Grey: 50 ohms Pin 3/Brown : common Note: Pin 1 is marked for identification
E A Sowter Ltd The Boatyard Cullingham Road IPSWICH IP1 2EG England	Tel:+44(0)1473 252794 Fax:+44(0)1473 236188