{"product_id":"dc-3v-to-6v-diy-otl-discrete-component-circuit-power-amplifier-kits-electronic-training-kits","title":"DC 3V To 6V DIY OTL Discrete Component Circuit Power Amplifier Kits Electronic Training Kits","description":"\u003cdiv\u003e\u003cstrong\u003e\u003cspan style=\"font-size:16px;\"\u003eParameter:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eSize: 40*55*1mm(length*width*height)\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eInput voltage: DC 3-6V\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cstrong\u003e\u003cspan style=\"font-size:16px;\"\u003eCircuit description:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e1. Q1 is the excitation amplifier, which gives the power amplifier output stage enough push signals.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e2. R1 and RP2 are the bias of Q1.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e3. On the R3, D1, and RP3 series-pole circuits, bias the Q3 to make it statically in a micro-conducting state to eliminate crossover distortion.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e4. C3 is an anti-vibration capacitor for eliminating circuit surges.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e5. Q2 and Q3 are complementary symmetric push-pull power amplifiers, which form a power amplifier output stage.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e6. C2, R4 composition bootstrap circuit, R4 is current limiting resistor.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cstrong\u003e\u003cspan style=\"font-size:16px;\"\u003eCircuit debugging:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eConnect DC 3-6V power supply and adjust RP2 so that the midpoint voltage of Q2 and Q3 is 1\/2 supply voltage.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003eAdjust RP3 so that the quiescent current of the amplifier output stage is 5-8 RP2 and RP3 so that both parameters reach the above values!\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cstrong\u003e\u003cspan style=\"font-size:16px;\"\u003eWelding step:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e1. Weld resistance and zener diode first. Keep the board as close as possible.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e2. Then weld the capacitance of the triode capacitor. Welded capacitors and triodes are used to pay attention to polarity.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e3. The third step welding two adjustable resistors, a volume potentiometer.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e4. Finally weld the three terminal blocks.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cstrong\u003e\u003cspan style=\"font-size:16px;\"\u003ePackage included:\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e\u003cdiv\u003e \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"font-size:14px;\"\u003e1 X DIY OTL discrete component circuit power amplifier kits\u003c\/span\u003e\u003c\/div\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/FD\/7C\/ac2cabb6-c372-4908-92e2-d7e56b333921.jpg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/59\/7B\/f7837a6e-0ce5-4e24-aea4-ca1716c6762d.jpg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/5F\/60\/8b78d364-fdde-42e8-9303-435e360aa23f.jpg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/77\/A5\/73ccc9c4-0f7c-4286-bb43-f23e75f83013.jpg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/19\/E9\/1a1c9a3c-bbcf-48cf-ac41-4283e2f741fd.jpg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/DE\/EE\/3f7bff61-b39d-4922-b6a8-365611cd2ca7.jpg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/13\/58\/5e7dc076-5878-4796-9817-3703466b6ec1.jpg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/94\/7D\/d22de0e0-afbe-4789-be55-934ab6890476.jpg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/2F\/FC\/f9c7e80b-d78a-4c16-9794-365c09203e2c.jpg\"\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003cimg alt=\"\" src=\"https:\/\/img.staticbg.com\/images\/oaupload\/banggood\/images\/E4\/42\/9069de9f-fd46-40ef-860a-29f22f412aa0.jpg\"\u003e\u003cbr\u003e","brand":"Shopify","offers":[{"title":"Title","offer_id":32129304887386,"sku":"1300900","price":750.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2787\/9162\/products\/c1251d4c-09a7-41a2-bcb1-b9055aa98552_597293f7-d863-458d-a31f-b554cc49ec2b.jpg?v=1587140626","url":"https:\/\/electronic-pro-south-africa.myshopify.com\/products\/dc-3v-to-6v-diy-otl-discrete-component-circuit-power-amplifier-kits-electronic-training-kits","provider":"Electronic Pro ","version":"1.0","type":"link"}