coll circuit

As a information, a one-inch reed switch with 40 flips reliably changeed on with the current flowing thru a 150-watt lamp (approx. 625 mA) however higher reeds may just require more flips. If the master equipment draws much less present (which is not doubtless with power tools) more turns will most definitely be required. The reed swap is used to change on transistor T1 which in turn switches the relay RE1 and powers the slave equipment. Since reed changees have a low mechanical inertia, they have little difficulty in following the fluctuations of the magnetic container due to the alternating present in the coil and because of this they're going to change on and off at one hundred Hz.

Mains Slave Switcher II Circuit Diagram

C3 is due to this fact suited for decelerate the transistor response and maintain the relay energised during the mains zero crossings when the present drawn by means of the application falls to zero and the reed switch opens. C1 drops the principles voltage to about 15 V (determined by zener diode D1) and that is rectified and smoothed through D2 and C2 to supply a d.c. provide for the circuit. The relay contacts will have to be rated to switch the intended appliance (vacuum cleaner) and the coil should have a minimal coil resistance of four hundred R as the easy d.c. provide can only present a limited current. C1 drops virtually the full mains voltage and will have to subsequently be a n X2-class component with a voltage rating of at the least 250V a.c.

The circuit is with the help of its nature related directly to the principles supply. Great care should therefore be taken in its development and the circuit will have to be enclosed in a plastic or earthed steel field with mains sockets geared up for the master and slave appliances.

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