Physics experiment power system is divided into junior high school and high school. Project unit: Beijing Chaoyang District Education Committee Teaching Equipment Center
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The teacher demonstration table has a total power supply for teaching safety, and the student experiment table has a controlled student power supply. There are many forms according to different uses (mechanics, optics, electricity).
High school (junior high school) teacher power supply: AC output 2V-30V divided output, rated current 8A, DC regulated output: 1.5v-30v divided continuously adjustable, rated current ≥ 6A, with a short time output of 40A DC high current 1-20S is continuously adjustable, and the teacher uses a single-line digital transmission technology to centrally control the student's power supply and is compatible with the function of an independent power supply.
(Junior high school) Controlled student power supply: DC regulated output: 1.5V-12V digital binning teacher control and teacher upper limit voltage control student continuous voltage regulation, rated current ≥ 2A.
(High school) Controlled student power supply: AC output ≥ 2V-30V digital binning teacher control and teacher upper limit voltage control is, student digital binning adjustment, rated current ≥ 3A, DC regulated output: 1.5V-30V digital binning teacher Control and teacher upper limit voltage control, student continuous voltage adjustment, rated current ≥ 2A.
Teacher power supply and controlled student power supply are equipped with over-current and short-circuit protection, manual reset. It features an overload protection integral circuit that can directly light incandescent lamps of equal power.
Bidding agency: Beijing Jingfa Tendering Co., Ltd.
1. Project Name: Beijing Chaoyang District Education Committee Teaching Equipment Center Primary School, Junior High School Special Classroom Project 2. Tender No .: BJJF-2008-814
3. Tenderee: Beijing Chaoyang District Education Committee Teaching Equipment Center 4. Tendering agency: Beijing Jingfa Tendering Co., Ltd.
Address: No. 90, Chongwenmenwai Street, Beijing Postcode: 100062
Contact: Zhao Yanchun Hu Xiaoming
Telephone
Fax 5. Tendering method: Open tendering to determine the date of winning: December 29, 2008 List of judges: Wang Fengming, Xue Songshi, Cheng Xiuquan, Jin Dewen, Su Qing, Liu Ying, Guan Jianhua Xin Renxuan, Xu Bangxu, Li Xiangping, Zhu Cheng, Li Xiaoheng Fang Xiaoli and Wang Huali Bid Evaluation Method: The Fourth Section of the Comprehensive Quantitative Evaluation Method (Physical Laboratory)
Pre-winning bidder: Beijing Liri Office Supplies Co., Ltd. Pre-winning bid amount: RMB Lu Shiyi million yuan Lu Bai Sansan Yuan (RMB 681630.00