Practical high frequency electronic fisherman circuit diagram

Probe domestic high frequency needle JKT-50L high frequency needle with 3 probes

Shunluo high frequency inductor, parallel stack inductor, shun winding inductor, authorized agent

Photocoupler

The high-frequency electronic fisherman circuit diagram of this paper adopts self-oscillation mode. The transistors BG1-4, BG5-8 and T1, T2, D1 and R1 form the pre-stage high-frequency self-excited oscillator. The T1 secondary output high-frequency high-voltage pulse is converted into a DC high voltage by a voltage doubler rectifier circuit composed of D1, D2, C1, and C2, and is input to the subsequent stage. The latter stage adopts the thyristor output circuit, and the capacitor C6, the thyristor Q1, the bidirectional trigger diode D5 and the coil T3 form a low frequency oscillating circuit, which discharges the high voltage direct current in a low frequency pulse manner, and the JP4 is connected to the potentiometer in the figure. Adjust the discharge frequency of the rear stage, JP5 is connected to the high and low voltage switch. As shown below.