I wanted to find a scheme of electromerism, rummaged through all the literature - no, but the Internet is littered with high-voltage electric rods. And that, when it had no hope, in the journal Radio for 1966 found exactly what I was looking for. Found ready-made electromagnet. Though he worked with 2, but I decided to secure to raise the voltage to 4.8 V using 4 battery 0.45 A*h. In the emitter circuit MP42 included resistor 750 Ohm. Also suggest that you enable parallel with the capacitor battery is possible with a larger capacity, which will allow to clearly relay to operate even at lower power.
Batteries to increase the reliability it is better to solder. The case took from dominoes. Switches and controls - top. You can use a resistor with a switch. Bottom design to prevent slipping, you can provide some protruding screws. In the spring of steel wire soldered to the Tang of steel of 2 mm thickness over the area of the electromagnet. Center of the case drilled through the hole and pulled the cover sleeve with the threads on the end.
Now a few words about the work. Because most of the fish are cautious, I put electromerism a few feet away in a field of view on a perch and others like him, but he caught on simple winter bait. Range of motion of the jig regulate the nomination nod. The frequency of positives I made of 0.3-0.5 Hz, and not as stated in the diagram.
Charging enough for 5 fishings, 4 hours of work. And other in-jokes, and the fishermen's amazing. Often shouting, "it Bites!". One only stood and watched, frowning, and then said that a few years ago drowned together with the box when collapsed. He has industrial production enough for nearly $ 1 fishing. And I have the whole winter! Well, no scales You!
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