Device for current clamps. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Measuring technology
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When servicing and repairing various electrical equipment and household appliances in amateur radio practice, MASTECH M226, M226AF digital multimeters are widely used, which include current clamps that allow non-contact and seamless measurement of alternating current. However, when measuring with clamps, only one current-carrying wire needs to be covered.
Fig. 1
This circumstance does not allow measuring current in two- or three-wire connecting cables used in many household electrical appliances and amateur radio designs. The noted limitation is eliminated using the simplest device, the electrical circuit of which is shown in the figure.
Author: B. Popov, Moscow; Publication: radioradar.net
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