Transistorize Millivoltmeter Physics Teaching Equipment

Product information:

HT-J0412-2 Transistorize millivoltmeter is a high-precision metrical instrument mainly for measuring sine-wave voltage and DC voltage. It is special for all kinds of school to do the electrical experiment during the physical teaching. It is also adopted by factory and research and development institution as the professional metrical instrument.
Adopting the high speed integrated circuit as input impedance transformer and direct-coupled amplification circuit as the signal amplification processing,this instrument has a wide range of measurement, high measuring accuracy and high EFT.

Technical parameters:

       2-1,Voltage measurement range: 0.5mV300V.Divide into 11 grades, the basic deviation is not more than ±4% of full-scale value of each gear.
2-2,Level measurement range: 50dB50dB.
2-3,Voltage frequency range: DC1MHz
2-4,Frequency response additive deviation:(10V300V no assessment, and use 1 KHz as basic criterion )
 10Hz100KHz≤±3%
 100KHz500KHz≤±5%
 500KHz1MHz≤±5%
   2-5,Input impedance: Ri 1.5MΩ, Ci 50pF.
2-6,Noise: When input shorts, the indicated value of the ammeter of 3mV gear is not more than 2% of full-scale value.
2-7,Power supply: 220V±10%,50Hz.
2-8,Working time: Continuous.
2-9,Dimension:270×180×145mm³.