7

LTC1177-5/LTC1177-12

Solid State Relay

Fully Floating 50

°F to 100°F Thermostat

ON/OFF

SET POINT

GND

OSC

DELTA

1

2

3

4

8

7

6

5

LTC1041

18

11

10

1

9

10M

DELTA = 0.5

°F

6.81k

*

49.9

Ω

49.9k

5k

4.32k

10

µF

56

Ω

100nF

26VAC

2-WIRE

THERMOSTAT

Si9955DY

7, 8

1, 3

2

4

5, 6

1

µF

5V OR 12V

1177 TA06

LTC1177-5

LTC1177-12

+

ALL RESISTORS 1%

* YELLOW SPRINGS INSTRUMENT CO. INC. P/N 44007

SELF-HEATING ERROR

GND

OUT

SENSE

GND2

LTC1177-5

LTC1177-12

GND1

OUT

LTC1177-5

LTC1177-12

GND1

AC 60Hz

OUT

IRFR224

20M

1177 TA05

ISOLATION BARRIER

SENSE

GND2

Information furnished by Linear Technology Corporation is believed to be accurate and reliable.

However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-

tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.