Small and practical acupuncture pen circuit diagram

The outer diameter of the probe domestic PA50-F small four-jaw gold-plated needle is 0.68. The total length of the needle is 16

Small and practical acupuncture pen circuit

The working principle is as follows: IC1 is a music integrated circuit. After K1 is closed, the audio current output by IC1 is amplified by BG1-BG3, and then boosted by transformer B1, and the secondary output is high voltage of about 200V. It is divided into two parts, AC and DC. The AC high-voltage AC power is directly output to the needle contact, and the w2 is appropriately adjusted. When the contact contacts the human skin, it can generate strong stimulation. Because the AC has a skin effect, the treatment can only act on the skin surface. The DC block high voltage is generated by the rectification and filter circuit composed of AC power through D1～D4 and C2, and is output to the contact and output socket. The acupuncture patch is used to adjust the w2 according to the patch spacing to make the LED2 just illuminate, which can achieve deep treatment. purpose.