Thursday, July 05, 2018

Yiroshi Power Amplifier - SMD

This is my third project for Yiroshi Power Amplifier Circuit, the power amplifier circuit is very super quality, many have tested the power of this Yiroshi power amplifier. Power amplifier Yiroshi suitable for outdoor or indoor or used for the bass amplifier (subwoofer amplifier). Previously I have made this Yiroshi amp circuit in a stereo version of Yiroshi amplifier, which I have tested and worked well. 

But in this post, I make this Yiroshi power amplifier circuit by using some component of SMD (Surface Mount Device) in buffer circuit and its driver. Some components that I change to SMD eg 2N5401 transistors with mmbt5401, 2N5551 and mmbt5551 and some capacitors and resistors. And for transistor driver still use the same transistor as Yiroshi previous amplifier, as well as on the final part of the transistor which still uses 2SC5200 and 2SA1943. Here's the circuit scheme:

Yiroshi Power Amplifier - SMD
 Component List:
NameDesignatorFootprint
2.2KΩR10805
47KΩR2, R9, R440805
330pFC10805
100ΩR3, R40805
MMBT5551Q1,Q4,Q6,Q8SOT-23(SOT-23-3)
MMBT5401Q2,Q3,Q5,Q7SOT-23(SOT-23-3)
47ΩR5,R6,R7,R8,R25,R260805
4.7nFC2,C130805
560ΩR10, R111206
100uFC3,C4CAP-D10.0XF5.0
2.2KΩR12,R13,R14,R151206
100Ω(100R)R16, R170805
TIP32/A1837Q9TO-220(TO-220-3)
TIP31C/C4793Q10TO-220(TO-220-3)
10pFC5,C60805
220Ω(221)R18, R191206
220Ω(220R)R20,R211206
100RR22, R230805
150RR241206
330uFC7CAP-D10.0XF5.0
A1837Q11, Q15TO-220(TO-220-3)
C4793Q12, Q14TO-220(TO-220-3)
150pFC8,C90805
10Ω(10R)R27, R282512
MJE340Q13ONSC-TO-225-3-77-09
TRIMPOT2R29TRIMPOT
3.3KR300805
1.8KΩR310805
100nF(104)C100805
22KΩR320805
47pFC110805
100ΩR33, R361206
120Ω(121)R34, R352512
470Ω(471)R37, R382512
10ΩR39, R401210
2SC5200Q16TO-247
2SA1943Q17TO-247
0.47Ω(R47)R41, R42DIP-RES-15.5MMX5MM
1N4937-E3/54D1,D2DO-41
100nFC121210
100ΩR432512
SPEAKERSP2AL60P
10uFC140805

Power amplifier Yyiroshi SMD has a PCB design is smaller because it uses some SMD part and with double layer PCB design so that the path and components can be arranged as neatly as possible and as small as possible. This is the first design of Yiroshi Power Amplifier that uses SMD part, allows for future I will update again with PCB smaller and can be more quality again. Here's PCB Layout design:
PCB Layout design Yiroshi amplifier

Top Bottom PCB Layout Design
Top Bottom PCB Layout Design Power Amplifeir yiroshi
PCB Size 83mm*58mm

Video of making this Power amplifier in SMD components:
Download:
PCB Gerber File Yiroshi Amplifier SMD

Electronic Circuit is a good site for hobbyist also who would like to try DIY because it shared good circuits. If you have a personalized circuit requirement you may feel free to request it through the comment box or contact me.

5 Comments

Very nice, i actually using my Yiroshi power amp for bass purposes. Sir Is this new 3rd Yiroshi project has more power for bass? waiting for the update

It is same bass purposes, but it same as previous version same as stereo yiroshi amp betwen using SMD components more compact design pcb size.

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