... stability AC power sources Adjustable Current Source1. AC-DC-AC frequency conversion technology2. Digital wave synthesis, wave feed-back technology, low power ... speed 12 bits A/D sampling technology,exactly display Voltage5. Current, Power, Power factor, Frequency6. Zero output impedance, equivalent resistance ... voltage range:AC 0-300V12. CHP-500 Output biggest current:0-150V is 4.2A,0-300V is 2.1A13 ...