YS37(T) type audio power supplyDetailed product description：

YS37 (T) type audio power supply

I. Overview
The YS37 (T) audio power supply is a supporting power supply for the dedicated calibration device, and can also be used separately as a high-precision measurement and testing power supply for other instruments and meters. Match the transformer. In order to improve the accuracy of frequency display, a 5-digit display is used for frequency display. The power supply mainly consists of four parts: DC power supply, oscillator, phase shifting circuit, and power amplifier. The oscillator part adopts the commonly used Wen's bridge oscillator as the main oscillator. In order to improve the stability of the oscillation output, a stabilizing link is added to ensure the constant output amplitude value. The phase shifter system adopts an active resistive capacitive phase shifting circuit, which achieves the purpose of changing the phase by changing the resistance. The power amplifier adopts an OCL low-frequency power amplification circuit. In order to facilitate the output of different voltages and currents, the output terminal of the amplifier is connected to a corresponding output amplification circuit. In order to facilitate the output of different voltages and currents, the output terminals of the amplifier are connected with corresponding outputs

2、 Technical data of YS37 (T) audio power supply

Rated output voltage and current	Frequency (HZ)	100～4K
	release big device (I),(II)	Rated voltage (V)	Current (A)
		ten	ten
		thirty	five
		fifty	three
		seventy-five	two
		one hundred and fifty	one
	Note: The output power from 4KHz to 10KHz is 150W to 100W

Frequency range: 100Hz to 10KHz; Frequency indication error: less than 0.1% ± 1 word; Frequency stability: changes every 3 minutes, less than 0.01%
Amplifier output amplitude instability: At rated output, the variation does not exceed 0.02% every 3 minutes
When the output frequency is 100 ± 3Hz, the additional instability of the amplifier output amplitude does not change by more than 0.02% every 3 minutes
The amplifier amplitude output adjustment fineness is 0.01% of the rated value
Output distortion: less than 0.3% between 100Hz and 3KHz, and less than 0.5% for the rest
Phase adjustment range: greater than ± 100 °; Phase adjustment fineness less than 0.005 °; The phase instability does not change by more than 0.01 ° every 3 minutes
Voltage regulation rate: When the input voltage is 50Hz and 220V ± 10%, the amplitude change of the output voltage is less than 0.02%
Power supply: 50Hz power frequency at 220V ± 10%; power consumption: less than 800VA
The operating environment temperature is 5-40 ℃, the relative humidity is 20% -80%, and the stability temperature is guaranteed to be 20 ± 2 ℃
Volume: 159 × 480 × 480mm3; Weight: less than 30Kg