Hauv kab lus no, peb yuav qhia koj tias cov khoom siv twg xav tau los tsim koj tus kheej 30-watt lub suab nrov nrog koj txhais tes hauv tsev. Luam tawm pawg thawj coj hauv LAY hom ntawv txuas nrog. Nws tshwm sim tias yuav tsum muaj lub zog loj nrog lub zog loj tshaj, thiab lub suab zoo yuav zoo heev. Lawm, yuav cov cuab yeej zoo li kim heev, tom qab ntawd qhov kev xav tau los, "Koj puas xav kom sib sau lub suab nrov ntawd koj tus kheej hauv tsev?" Ntawm no peb muab qhov yooj yim 30-watt suab amplifier Circuit, uas tuaj yeem thov nrog lub zog thiab lub suab zoo.
Lub tswv yim npaj tswv yim tsis yog tshiab, ua pov thawj. Ib khub transistors (Darlington) hauv TOP3 pob yuav tsum tau teeb ntawm lub tshuab cua txias. Nruab nrab ntawm lawv, tig mus, koj yuav tsum tso mica rau rwb thaiv tsev, thiab txhawm rau kom muaj cua sov hloov pauv tau zoo, koj yuav tsum tsis txhob khuv xim qhov muab tshuaj txhuam cua sov thiab siv (KPT-8).
Hauv qhov kev sib tham no, tau teeb tsa TR tus tiv thaiv, nws xav tau los teeb tsa lub zog tam sim no. Txhawm rau kho qhov kev tiv thaiv no kom raug, koj yuav tsum: ntsaws qhov txuas ntawm lub ntsuas cua mus rau qhov kawg ntawm tus tiv thaiv R20 (lossis R21) thiab ntsuas qhov ntsuas hluav taws xob (lub zog siab tshaj plaws ntawm lub multimeter yuav tsum yog 200 mV), tom qab ntawd kho qhov tau txais lub zog ntawm TR resistor rau 12 mV cim.
Qhov kev poob qis no tuaj yeem sib npaug rau DC tam sim no ntawm 30 mA. Cia lub suab nrov nrov nyob hauv lub xeev tsis tu ncua li ntawm 15 feeb yam tsis muaj lub teeb liab nkag mus, thiab tom qab ntawd rov kho dua qhov kev nyeem.
Cov npe ntawm cov khoom siv los tsim 30 Watt lub suab nrov nrov:
Resistors:
- R1 = 1 kΩ ib
- R2 = 47 kΩ ib
- R3 = 1.5 kΩ ib
- R4-5 = 10 kΩ ib
- R6 = 5.6 kΩ ib
- R7 = 10 hli
- R8 = 47 kΩ ib
- R9 = 560 Ohm
- R10-11 = 8.2 kΩ ib
- R12-15 = 120 hli
- R13 = 680 Ohm
- R14 = 330 hli
- R16-17 = 270 AWM
- R18 = 22 Ohm 1W
- R19 = NC
- R20-21 = 0.39 Ohm 4W
Txhua tus tiv thaiv yog 0.250W 1% qhov tseeb tshwj tsis yog raws li tau teev tseg. Zener Diodes: Kev Ntsuam Xyuas
D1 = 9.1V 0.4W
Diode:
D2-3 = 1N4148
Transistors:
- VT 1-2 (Q1-2) = BC550C
- VT3 (Q3) = MPSA56
- VT 4 (Q4) = BC547B
- VT 5 (Q5) = BC212
- VT 6 (Q6) = BC183
- VT 7-8 (Q7-8) = MPSAO6
- VT 9 (Q9) = TIP141
- VT 10 (Q10) = TIP146
Capacitors:
- C1 = 100V 470nF MKT (polystyrene)
- C2 = 100V 1nF MKT (polystyrene)
- C3 = 68pF (tej hub)
- C4-8 = 22nF 100V MKT (polystyrene)
- C5-6-7 = 100V 100nF MKT (polystyrene)
- C9 = 25V 47uF
- C10-11 = 220uF 63V
