5pcs TES1-4903 20x20x3.6mm 5V 3A Thermoelectric Cooler Semiconductor Refrigeration Film Heatsink Peltier Plate Module

Description Note for use in refrigeration 1 The red wire is connected to the power wire is connected to the anode cathode and without cooling conditions the instantaneous power of the test which touch the two end of the refrigerator you will feel a fever a little have a fever cold heat cold side cold But time can not exceed 5 seconds otherwise the hot end temperature is too high extremely easy to cause the device to burn out 2 Under normal conditions the lead with red is usually expressed as the positive pole usually with black as the negative this is the work of the thermoelectric cooler wiring method When the current polarity is changed the polarity of the current can be changed Refrigeration work must adopt the switching power supply power supply ripple coefficient should be less than 10 3 The number of the thermocouple and the limit voltage of the thermocouple identification method the number of pairs of thermocouple P N node For example cooler model for TEC1 12706 127 for cooler thermocouple logarithm 06 allowable current value A the threshold voltage is logarithmic thermocouple cooler 0 12 for example limit voltage V TECI 12706 127 x 0 12 15 4 V The normal operating voltage is 78 of the limit voltage such as the working voltage of 15 4 0 78 12 01V is TEC1 12706 4 All kinds of cooler in use or in the test the cooling and heating temperature of hot and cold exchange should be returned to the room temperature usually more than