RMI-FC100, a single stage audio power amplifier - Page 10

johanne · 16th November 2007, 09:35 PM

hello roender

great design, and i´m in phase with carlos!
please tell us how to buy the thermal traks.

regards
Ralf

roender · 17th November 2007, 10:52 AM

Quote:

Originally posted by johanne
hello roender

great design, and i´m in phase with carlos!
please tell us how to buy the thermal traks.

regards
Ralf

Thank you Johane.
You can order sample from ONsemy and you have to pay for transport only:
http://www.onsemi.com/PowerSolutions...do?id=NJL0281D
http://www.onsemi.com/PowerSolutions...do?id=NJL0302D
Or you can buy from Digikey.

Mihai

roender · 17th November 2007, 10:58 AM

Quote:

Originally posted by destroyer X

... and also because Roender's superior design i will try this one in January.

Thanks,

Carlos

Quote:

Originally posted by sunrise
Dear Roender,
can we have some parts info related your "shunty" psu ??
please?

thanks

Dear Carlos,
I am glad to hear that!
You will have my full support because this amp is not ease to build.

Dear Sunrise,
The BOM and construction details will be ready tomorrow

Mihai

sunrise · 17th November 2007, 01:46 PM

Quote:

Originally posted by roender

Dear Sunrise,
The BOM and construction details will be ready tomorrow

Mihai

thanks

johanne · 17th November 2007, 06:47 PM

thanks for info, so on not off

regards
Ralf

roender · 18th November 2007, 02:13 PM

RMI-FC100 amplifier BOM
Resistors and capacitors values are printed on schematic.
http://www.diyaudio.com/forums/attac...mp=1194852081&
All resistors are 0.6W metal film with exception of
R3, R4, R10, R33, R39, R47: 2W metal film.
R8, two 10ohm 0.6W metal film resistors conected in parallel
C8, C9, C18: silvered mica or styrofelx or ceramic NP0
C1, C10,C11: WIMA MKS4 63V
C2, C7: WIMA MKS4 250V
C21: 16V LOW ESR (Panasonic, Rubycon)
Biggest capacitors on PCB: 4 x SAMWHA 10.000uF/50V HC series *
Capacitors colse to power BJTs: 4 x Panasonic 1000uF/63V LOW ESR FC series *
*- see amp pcb http://www.diyaudio.com/forums/attac...amp=1194895504
D1, 1N4148: 1W glass case
D2, D3, D8: Green LED type LT433B or any other rectangular LED with Vf>=1.9V at If=5mA
D7, D6: BL-R5122B.RED or any other rectangular red LED
J1, J2: 2SK170BL with Idss >= 9mA
Q6, Q7, Q9: BC550C
Q11, Q13, Q17: BC560C
Q8, Q15, Q18, Q19, Q21: 2SC3423Y
Q10, Q14, Q16, Q20: 2SA1360Y
Q1: MJE15034
Q3: MJE15035
Q2, Q12, Q25: NJL0281D (prefered) or NJL3281D
Q4, Q5, Q27: NJL0302D (prefered) or NJL1302D

The following BJT peers must have hfe as close as possible:
Q21-Q18
Q11-Q13
Q6-Q7
Q14-Q16
Q19-Q20
Q1-Q3
The folowing power BJT must have the same Vbe +/- 1mV (only between the same type NPN/PNP) and all must have hfe as close as possible:
Q2-Q12-Q25-Q4-Q5-Q27
J1 and J2 must have the same Idss>=9mA and must have the same Vgs +/- 1mV at Id=6.25mA

roender · 18th November 2007, 02:50 PM

RMI-FC100 frontend PSU BOM
http://www.diyaudio.com/forums/attac...amp=1194852836
All resistors are 0.6W metal film
R1, R2: 2R2
R3, R4: 33R
R5, R6: 11k
R7, R8, R9, R10: 2k
R11, r12: 560R
C1, C2, C3, C4: 10nF/100V ceramic
C5, C6, C7, C8: 2200uF/63v
C13, C14: 100uF/50V Low ESR
C9, C10: 2u2 WIMA MKS4 63V
C11, C12: 2n2/100V ceramic NP0 or CG0
C15, C16: 470nF/250V MKP or MKT
D1, D2, D3, D4: FR107
LED1,2: Green LED type LT433B or any other rectangular LED with Vf>=1.9V at If=5mA
D7, D8: Z39/1W zener diode
T1: BD140
T2: BD139
Q2, Q3: BC550C
Q4, Q5: BC560C
Q6: MJE15034
Q7: MJE15035

roender · 18th November 2007, 05:48 PM

Starground connection to main capacitors

roender · 18th November 2007, 05:51 PM

NFB connections and starground point

roender · 18th November 2007, 05:53 PM

One NJL diode must be bypassed

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16th November 2007, 09:35 PM	#91
johanne diyAudio Member Join Date: Apr 2007	hello roender great design, and i´m in phase with carlos! please tell us how to buy the thermal traks. regards Ralf

17th November 2007, 06:47 PM	#95
johanne diyAudio Member Join Date: Apr 2007	thanks for info, so on not off regards Ralf

18th November 2007, 02:13 PM	#96
roender diyAudio Member Join Date: Sep 2006	RMI-FC100 amplifier BOM Resistors and capacitors values are printed on schematic. http://www.diyaudio.com/forums/attac...mp=1194852081& All resistors are 0.6W metal film with exception of R3, R4, R10, R33, R39, R47: 2W metal film. R8, two 10ohm 0.6W metal film resistors conected in parallel C8, C9, C18: silvered mica or styrofelx or ceramic NP0 C1, C10,C11: WIMA MKS4 63V C2, C7: WIMA MKS4 250V C21: 16V LOW ESR (Panasonic, Rubycon) Biggest capacitors on PCB: 4 x SAMWHA 10.000uF/50V HC series * Capacitors colse to power BJTs: 4 x Panasonic 1000uF/63V LOW ESR FC series * *- see amp pcb http://www.diyaudio.com/forums/attac...amp=1194895504 D1, 1N4148: 1W glass case D2, D3, D8: Green LED type LT433B or any other rectangular LED with Vf>=1.9V at If=5mA D7, D6: BL-R5122B.RED or any other rectangular red LED J1, J2: 2SK170BL with Idss >= 9mA Q6, Q7, Q9: BC550C Q11, Q13, Q17: BC560C Q8, Q15, Q18, Q19, Q21: 2SC3423Y Q10, Q14, Q16, Q20: 2SA1360Y Q1: MJE15034 Q3: MJE15035 Q2, Q12, Q25: NJL0281D (prefered) or NJL3281D Q4, Q5, Q27: NJL0302D (prefered) or NJL1302D The following BJT peers must have hfe as close as possible: Q21-Q18 Q11-Q13 Q6-Q7 Q14-Q16 Q19-Q20 Q1-Q3 The folowing power BJT must have the same Vbe +/- 1mV (only between the same type NPN/PNP) and all must have hfe as close as possible: Q2-Q12-Q25-Q4-Q5-Q27 J1 and J2 must have the same Idss>=9mA and must have the same Vgs +/- 1mV at Id=6.25mA

18th November 2007, 02:50 PM	#97
roender diyAudio Member Join Date: Sep 2006	RMI-FC100 frontend PSU BOM http://www.diyaudio.com/forums/attac...amp=1194852836 All resistors are 0.6W metal film R1, R2: 2R2 R3, R4: 33R R5, R6: 11k R7, R8, R9, R10: 2k R11, r12: 560R C1, C2, C3, C4: 10nF/100V ceramic C5, C6, C7, C8: 2200uF/63v C13, C14: 100uF/50V Low ESR C9, C10: 2u2 WIMA MKS4 63V C11, C12: 2n2/100V ceramic NP0 or CG0 C15, C16: 470nF/250V MKP or MKT D1, D2, D3, D4: FR107 LED1,2: Green LED type LT433B or any other rectangular LED with Vf>=1.9V at If=5mA D7, D8: Z39/1W zener diode T1: BD140 T2: BD139 Q2, Q3: BC550C Q4, Q5: BC560C Q6: MJE15034 Q7: MJE15035

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