The simple leakage alarm circuit

Published:2011/7/6 9:54:00 Author:qqtang | Keyword: leakage alarm | From:SeekIC

Element selection and producingThe elements are chosen as the principle diagram While making it, we can choose a circuit according to the concrete condition, the 2 electrodes in the 2-hole outlet in the mixed outlet are cut off, so the circuit elements can be accommodated, and the installation is done in the room. After the installation, we can simulate the leakage dial with a 200Ω, one of whose terminals is connected with the power supply wire, while the other terminal is connected with the ground terminal, the circuit is only needed to work normally. In the figure, the withstand voltage of the diode should be higher than 400V, YD can be the Φ27mm, βof the transistor VT is ≥100, and the powers of all the resistors are 1/8W.



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