YS37D type programmable audio power supplyDetailed product description：

YS37D Programmable Audio Power Supply

I. Overview
The YS37D programmable audio power supply is a supporting power supply for the highest level XF12 audio power standard device (produced by our company) in China. It can also be used independently as a testing power supply for high-precision measurement of other instruments and meters. It is an ideal upgraded product for analog audio power supplies. This audio power supply adopts a fully digital synthesis signal source, and the true effective value closed-loop feedback method significantly reduces the impact of load on output stability. The application of power modules significantly reduces the size of the device. The unique amplitude adjustment modes of fast, medium, and slow, as well as the bidirectional communication display control function between the external control keyboard and the host, conform to the operating habits of meter detection and are conducive to improving work efficiency. In addition, this device provides a digital interface with minimal drift over the long term, and is widely used in metrology institutes, power systems, and enterprise metrology units in various provinces and cities across the country.

2、 Main technical indicators
Frequency range: 40Hz-10KHz; Frequency indication error: 2 × 10
Rated voltage output (V): 30-75-150-300-450-750-1000; Rated current output (A): 0.1-0.5-1-2.5-5-10-30
Maximum output amplitude: 120% of rated range
Instability of amplifier output amplitude: no more than 1.0 change in 3 minutes
Amplifier output amplitude adjustment fineness: 2.0 × 10
Distortion (voltage, current): 40Hz-1kHz less than 0.3%, others less than 0.5%
Phase adjustment range: 0-360o (with lead lag indication)
Fineness of frequency and phase adjustment:
40Hz99.99Hz0.01Hz0.01o
100Hz-999.990.1 Hz0.1o
1KHz-10KHz1Hz1o
Phase instability: no more than 0.01o change every 3 minutes
Synchronous function of mains power (eliminating the impact of beat frequency): Yes; Maximum output power: 60VA
Load adjustment rate: When the load changes by 10%, the output amplitude changes by less than 0.05%
Voltage regulation rate: When the power supply voltage changes by 10%, the output voltage changes by less than 0.02%
Power supply: 220V ± 10%, 50Hz ± 1Hz; power consumption: less than 500W
Operating environment temperature: 5-40 ℃, relative humidity 20-80% (ensure stable temperature of 20 ± 2 ℃)
Dimensions: 545 × 480 × 195mm; Weight: 20Kg; Communication Interface: RS232; Attachment: XC10 Extended Keyboard