How to better buy solar water heaters?

"With the increase in electricity prices, solar water heaters with advantages such as energy saving, environmental protection and safety are increasingly favored by consumers. Ms. Huang is going to install a solar water heater. She can't know how to buy this product with a small market share. The salesman explained to her how to buy solar energy.

When the semiconductor diode is turned on, it is equivalent to the switch closing (circuit is turned on), and when it is turned off, it is equivalent to the switch opening (circuit cut), so the diode can be used for switching, and the commonly used model is 1N4148. Since the semiconductor diode has a unidirectional conduction characteristic, the PN junction is turned on under a positive bias, and the resistance in the on state is small, about several tens to several hundreds of ohms; in the reverse bias, it is off. The resistance is very large. Generally, the silicon diode is above 10 Μ Ω, and the bismuth tube is also several tens of kilo ohms to several hundred kilo ohms. With this feature, the diode will act as a control for the current to turn on or off in the circuit, making it an ideal electronic switch.

Switching Diode

Switching Diode,1N4148 Signal Diode,4148 Diode,1N4148 Diode

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