A voltage regulation circuit for an air energy water heater
A voltage regulation circuit, air energy water heater technology, applied in fluid heaters, lighting and heating equipment, etc., can solve the problems of low safety, difficult to control constant temperature, inconvenient use, etc., to achieve the effect of overcurrent protection and low cost
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Embodiment 1
[0018] Embodiment 1, a voltage regulation circuit for an air energy water heater, including a temperature sensor in the temperature signal acquisition circuit that detects the temperature signal in the thermal insulation water tank in real time and converts it into an electrical signal, obtains the temperature difference through subtraction and then scales it up, and clamps the diode between 0~ After +5V, it is sent to the step-by-step voltage regulation circuit as the trigger signal of the first-level triode, and the attached figure 2 The middle arrow indicates the signal flow diagram of the trigger signal triggering the turn-on or turn-off of the first to fourth-level triodes, and the corresponding first-to-fourth-level triodes are turned on or off, which can change the transformation ratio of the step-up transformer, realize the regulation of the output voltage, and then adjust The power of the compressor keeps the water temperature in the heat preservation water tank in a ...
Embodiment 2
[0019] Embodiment 2, on the basis of Embodiment 1, the coupling voltage circuit realizes the regulation and control of the output voltage, and then adjusts the power of the compressor, including a step-up transformer T1, and the primary coil of the step-up transformer T1 has three taps 2, 3 , 4 transformers, step-up transformer T1 wire head 1 is connected to the output end of the four-stage triode voltage regulating circuit, and taps 2, 3, and 4 of the step-up transformer T1 are respectively connected to the output of the three-stage, two-stage, and one-stage triode voltage regulating circuits Terminal 5 of the step-up transformer T1 is connected to the ground through the capacitor C1. According to the transformation ratio formula N1 / N2=U1 / U2, step-by-step voltage regulation is adopted to control the conduction of different levels of transistors in the circuit to change the primary coil of the step-up transformer T1. The number of turns, and then change the voltage of the secon...
Embodiment 3
[0020] Embodiment 3. On the basis of Embodiment 1, the temperature signal acquisition circuit is used to detect the temperature signal in the thermal insulation water tank in real time and convert it into an electrical signal. After the temperature difference is obtained by the subtractor, it is proportionally amplified, and the diode is clamped at 0~+5V. , including the temperature sensor P1 of the model TPS35, which has a wide measuring range of -50°C to +150°C. As for the direct contact with water in the heat preservation water tank, the precision is high. Pin 1 of the temperature sensor P1 is connected to the power supply +5V, and the temperature sensor P1 Pin 2 converts the sensed water temperature information into voltage information UI1 of -0.5V-1.5V, divides the voltage through resistors R8 and R9, and then sends it to the non-inverting input terminal of the operational amplifier AR1. Pin 4 of the operational amplifier AR1 is connected to the ground. The pin 7 of the am...
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