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	600ohm C.T. 2.4kohm C.T. Transformer
	A compact '1+1:2+2' ratio high quality, industry standard, printed circuit board mounting audio frequency transformer with interwinding foil screen, enclosed in an injection moulded case. Wide applications include input, output and interstage uses. A MuMetal screening can is available separately or alternatively supplied fitted as part number A262A2C.

Transformers : Audio : Miniature PCB Mounting : Miniature PCB Mounting 1:6 Tapped at 1:1.8 Microphone Transformer

A range of miniature encapsulated and open audio input transformers and the new Z218 range of canned audio impedance matching and microphone transformers.

Z21808: Miniature PCB Mounting 1:6 Tapped at 1:1.8 Microphone Transformer

This device is intended for microphone input stages optimised for medium source impedance (~5kW), typical of medium Rbb bipolar transistors and operational amplifiers such as the NE5534. It can also be used for line level inputs when used in current mode active input circuits.

Specification
Turns Ratio	1:6 tapped at 1:1.8
Weight	45g
Optimum Secondary Load	100k//180p series 18k
	Min.	Typ.	Max.
Primary DC Resistance (pins 2 - 4)		45ohms
Secondary DC Resistance (pins 6 - 9)		1k5ohms
Optimal Source Impedance		150ohms
LF -3dB Point		5Hz	10Hz
HF -3dB Point *	65kHz	80kHz
30Hz max Level (3% THD)	-1dBu	+0dBu
THD (-10dBu, 1kHz)		0.003%	0.006%
CMRR (10kHz)	65dB	75dB
CMRR (50Hz)	110dB

* With 150W source resistance, optimum 2 pole secondary termination, screen and case (pins 1 and 5) grounded. Unused pins should be left floating with minimal pad size for best performance. With 150W source resistance and external trimming capacitor as per application circuits.


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