Automatic constant-temperature electric soldering iron
An electric soldering iron and constant temperature technology, which is applied in the field of electronic technology and temperature control, can solve problems such as easy burning of the soldering iron tip, limited use time, and poor use of the electric soldering iron.
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[0011] According to attached figure 1 The present invention can be realized by implementing the circuit working principle diagram of the shown automatic constant temperature electric soldering iron and the description of the accompanying drawings and the technical requirements of the components and parts described below.
[0012] Selection of components and their technical parameters
[0013] KS is a bidirectional trigger diode, the selected model is BCR3AM or 2CTS;
[0014] SCR is a bidirectional thyristor, and the selected model is 3CTSI or DB3;
[0015] The resistance of the thermistor Rt is 5.1KΩ, and the thermistor Rt requires the use of a thermistor with a positive temperature coefficient;
[0016] The resistor is RTX-1 type metal film resistor with a power of 1W, the resistance value of resistor R1 is 5.1KΩ; the resistance value of linear potentiometer RP is 22KΩ;
[0017] Capacitor C1 is made of polyester capacitor with a capacity of 0.1μF, and the withstand voltage...
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Abstract
Description
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