TH1772B, a DC constant current source, is used for low frequency DC current biased impedance measurement of inductors, transformers and coils. The inductance characters under specified bias current can be measured and evaluated. The meter can be used with all LCR meters produced by our company and other well-known LCR meters worldwide, especially for fast measurement on production line. With its short setup time and low additional error for LCR meter can be used for fast measurement in a product line environment. Several DC bias sources can be paralleled to supply a higher DC bias current output. The meter can also be used as a common DC current source.
Specifications
Frequency response range
50 Hz – 10 kHz
5-bin current separately set, 10-turn electrograph
Bin 1: 0—2A
Bin 2: 1—3A
Bin 3: 2—4A
Bin 4: 3—5A
Bin 5: 4—6A
Point: press current key to output
Suitable impedance range
ωL < 2kΩ, L<1(H)
Display
3 1/2-digit LED display
Additional error of inductance measurement
£
Warm-up time
20 minutes
Output signal
Current accuracy
±1% of reading ± 2 digits
Output voltage range
0 — 11.5V
General Specification
Ordering Information
TH1772B DC bias current source
Instrument Accessories
TH26004-E bias current source link cable
TH26013 bias current source test cable
TH2881-001 pedal start switch