The capacitor of monocrystalline silicon fish catcher adopts nonpolar high voltage-resistant capacitor, generally 3-8UF is used for back machine, and 10-30UF is used for shipborne monocrystalline silicon fish catcher. The selected capacitor depends on the rectified voltage of the later stage and the working frequency required by the machine. Simply comparing the size of the turn-off capacitor does not represent the actual situation of the machine.
Only when all parameters are properly matched can the single silicon electronic fish catcher have better performance. The circuit of monocrystalline silicon electronic fishing machine is a turn-off circuit composed of thyristor, inductor and capacitor. The driving pulse of thyristor can be triggered by DB3 or driving transformer. When the thyristor is triggered, the unidirectional thyristor cannot be turned off by itself, so it is turned off by inductor and capacitor.
The turn-off principle of monocrystalline silicon fish catcher is that the current will generate a certain electromotive force, and the turn-off capacitor determines the turn-off time, which determines the output power of the machine with single frequency. The power of the single silicon electronic fish catcher is adjusted by adjusting the frequency.
There are many kinds of fishing machines, but the following are the main ones on the market:
1). The oldest mechanical platinum machine: There are two kinds of platinum machines. One is the bar platinum machine, whose switch is controlled by the magnetic field generated by the bar iron. The other is to use EI or EE iron core, make a relay as a switch to control, and the latter stage is directly output by transformer.
2) Electronic platinum machine: Electronic platinum machine uses electronic components instead of mechanical contacts.
3) Electron tube machine: This machine is the most common in the market, and it is divided into four tubes, eight tubes and twelve tubes. Several tubes are called several tubes, which are basically old-fashioned 3DD 15D tubes. The post-stage transformer outputs directly, and some of it is output through the conversion circuit, but this does not belong to the category of electronic tube machine.
4). High-frequency pulse generator: the former stage generates high-frequency oscillation in various ways to drive the transformer, and then converts it into high-voltage direct current. The latter stage is controlled by various circuits, such as frequency, current and pulse width. Some of them are protected by protection circuits, such as low battery voltage, electric shock, switching time control and so on.
5) Ultrasonic fish catcher: It uses ultrasonic waves to stun the heart and brain of all cold-blooded animals in the water, such as fish and soft-shelled turtle, but it removes oxygen and quickly floats to the surface in a large area to achieve the best catching effect. It can also stun hidden animals and catch them at will (it will wake up automatically after a few minutes), which is absolutely safe for humans and warm-blooded animals.