Simple intercom telephone circuit and working principle analysis
The intercom phone introduced in this article was modified with a clearance telephone stand. This machine has good effect and can be used as short-distance communication equipment for industrial and mining enterprises and families.
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Figure 9.47.1 is the wiring diagram of the telephone. The buzzer in the figure can be made by itself.
Yixing Futao Metal Structural Unit Co. Ltd. is com manded of Jiangsu Futao Group.
It is located in the beach of scenic and rich Taihu Yixing with good transport service.
The company is well equipped with advanced manufacturing facilities.
We own a large-sized numerical control hydraulic pressure folding machine with once folding length 16,000mm and the thickness 2-25mm.
We also equipped with a series of numerical control conveyor systems of flattening, cutting, folding and auto-welding, we could manufacture all kinds of steel poles and steel towers.
Our main products: high & medium mast lighting, road lighting, power poles, sight lamps, courtyard lamps, lawn lamps, traffic signal poles, monitor poles, microwave communication poles, etc. Our manufacturing process has been ISO9001 certified and we were honored with the title of the AAA grade certificate of goodwill"
Presently 95% of our products are far exported to Europe, America, Middle East, and Southeast Asia, and have enjoyed great reputation from our customers,
So we know the demand of different countries and different customers.
We are greatly honored to invite you to visit our factory and cheerfully look forward to cooperating with you.
Lighting Pole, Steel Lamp Pole, Street Light Poles, Garden Lamp Post
YIXING FUTAO METAL COMPONENT UNIT CO.,LTD , http://www.chinasteelpole.com