Digital multimeter M830B. Electric scheme, description, characteristics. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Measuring technology
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Description
The M830B Digital Multimeter measures AC/DC current, AC/DC voltage, resistance, and bipolar transistor gain (h21). Also, using the M830B multimeter, you can ring semiconductor diodes. The measurement results are displayed on a digital 31/2-digit LCD display. The multimeter is powered by one 9V "Krona" battery. The delivery set of the M830B multimeter includes a set of probes and instructions in Russian.
Features
Number of measurements per second: 2
DC voltage U= 0,1mV - 1000V
AC voltage U~ 0,1V - 750V
DC current I= 200?A - 10A
AC frequency range current 40 - 400Hz
Resistance R 0,1 ohm - 2 megohm
Input resistance R 1 MΩ
Transistor gain h21 up to 1000
Diode test: yes
Power supply 9V / type NEDA 1604, Krona VTS /
Dimensions, mm 65? 125? 28
Weight, grams (with battery) 180
Service: Low battery indication
Overload indication "1"
Average price: 8-10$
Below is the M830B digital multimeter schematic
(click to enlarge)
Publication: cxem.net
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