Tonghui TH1778A/TH1778AS DC Bias Current Source DC BAIS

Model：1778A/TH1778AS Country of Origin：China

Category：DC Bias

Overview：

High-current DC bias power supply, mainly used in the testing of inductive components such as cores and coils

Features

Specifications

Application Notes

Functions & Configuration

Features

■ Provides single-unit 0-20A constant current output

■ Supports up to 6 units linked, with maximum 120A constant current output

■ Master/slave control mode, flexible tailorability and scalability

■ Fine current stepping

■ 0Hz-2MHz frequency response

■ Two current output modes: single current and step sweep

■ Touchscreen operation, fast response

■ Graphical operation, Chinese and English interface

■ Two SCPI command modes, strong adaptability

■ 5 control modes

■ Directly controlled by TH2829/TH2827/TH2830 series

Applications

■ DC characteristic analysis of inductors/reactors

■ Saturation characteristic analysis of core/ferrite materials

■ DC characteristic analysis of other materials

Model	TH1778 main unit		TH1778A main unit		TH1778S/TH1778AS slave unit
Display	480×272 16:9 TFT LCD touchscreen		7-inch 800×600 RGB TFTLCD screen		------
Operation	Resistive touchscreen + physical buttons + foot control switch		Physical keys + foot control switch		Controlled by host
Supported measurement frequency	0Hz-2MHz
Current range	0-±20A				20A per unit, up to 5 units can be stacked
Current	Range	0mA-1.000A		1.000A-5.000A	5.0A-120.0A
	Step	5mA		25mA	100mA
	Sweep adjustment time	4ms-3600s		10ms-3600s	20ms-3600s
	Minimum sweep adjustment step	5mA		25mA	100mA
Range	1.000A/5.000A/20.0A				20.0A
Maximum output voltage	35V (this voltage is the voltage at an output of 1.000A; for different ranges, please refer to the user manual)
Maximum allowable DC resistance	Rmax=Vmax/I (Ω) (for Rmax calculation, please refer to the user manual)
Maximum allowable inductance	Lmax=Vmax/(di/dt) (mH) (for Lmax calculation, please refer to the user manual)
Range mode	Auto
Start/stop control method	START/STOP physical buttons, 4 types of foot control, bus
Continuous maximum current load time	2-3 h backup, continuous output
Features	Instrument fault self-diagnosis; 99 groups of custom file management; dual progress bar indication; Chinese/English bilingual; slave soft switch; real-time operation; SCPI command set; simple dual-display calculator, etc.
LCR connection capability	Controllable TH2829/TH2827/TH2830/TH2838				Controlled by host
Interface	RS232、SlaverLink				SlaverLink

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