Datasheet

Typical Applications (Continued)
Single Power Supply Cold Junction Compensation
TL/H/5698–11
*Select R3 and R4 for thermocouple type
THERMO-
R3 R4
SEEBECK
COUPLE COEFFICIENT
J 1.05K 385X 52.3 mV/
§
C
T 856X 315X 42.8 mV/
§
C
K 816X 300X 40.8 mV/
§
C
S 128X 46.3X 6.4 mV/
§
C
Adjustments:
1. Adjust R1 for the voltage across R3 equal to the Seebeck Coefficient
times ambient temperature in degrees Kelvin.
2. Adjust R2 for voltage across R4 corresponding to thermocouple
J 14.32 mV
T 11.79 mV
K 11.17 mV
S 1.768 mV
Centigrade Calibrated Thermocouple Thermometer
TL/H/5698–12
Terminate thermocouple reference junction in
close proximity to LM335.
Adjustments:
1. Apply signal in place of thermocouple and ad-
just R3 for a gain of 245.7.
2. Short non-inverting input of LM308A and out-
put of LM329B to ground.
3. Adjust R1 so that V
OUT
e
2.982V
@
25
§
C.
4. Remove short across LM329B and adjust R2
so that V
OUT
e
246 mV
@
25
§
C.
5. Remove short across thermocouple.
Differential Temperature
Sensor
TL/H/5698–7
Fast Charger for Nickel-Cadmium Batteries
²
Adjust D1 to 50 mV greater V
Z
than D2.
Charge terminates on 5
§
C temperature rise. Couple D2 to battery.
TL/H/5698–13
7