02-09-2025, 08:46 PM
(02-09-2025, 07:00 PM)savan Wrote: Kad kompletirate shemu dobrovoljno se javljam za crtanje pcb!
Hvala Savo, ..pa znaš da čemo te iskoristiti! Evo več sam ti počeo puniti korpu bonusima! :-)
U prijašnjom mom postu je dijelimična shema u PDF.
Strana2 sa "Module_x ULNA D100 JFET (x = 1, 2, 3, 4)" je zapravo definitivna shema za taj modul!
-otpori idu MELF 0204 veličine
CSR0204FTDV4991 Viking Tech Resistors | 250mW Metal Film Resistors 200V ±50ppm/℃ ±1% 4.99kΩ MELF Chip Resistor - Surface Mount | LCSC Electronics
-za 1R i 1K u NFB treba nači sa 0,1% tolerancije ThinFilm, MELF 0204, 1206
ARG06BTC1001 Viking Tech Resistors | 250mW Thin Film Resistor 200V ±25ppm/℃ ±0.1% 1kΩ 1206 Chip Resistor - Surface Mount | LCSC Electronics
RT1206BRD071RL YAGEO Resistors | 250mW Thin Film Resistor 200V ±25ppm/℃ ±0.1% 1Ω 1206 Chip Resistor - Surface Mount | LCSC Electronics
-ili 1R odraditi sa 10x10R 0,1% u paraleli, tako ima i manju ukupnu statističku toleranciju, naravno ako imamo platza
-L2,3,4,5 330nH (220nH...560nH) neka su slične veličine kao otpornici, da nisu premaleni,
#FSLM2520-R33K=P2 Murata Electronics Inductors, Coils, Chokes | 400mA 330nH ±5% 390mΩ 1008 Inductors (SMD) | LCSC Electronics
-kondenzatori 18pF i 33pF neka su COG/NPO za 100V (da ne probiju tek tako) i 1206 veličine (0805 min)
CC1206JRNPOBBN330 YAGEO Capacitors | 500V 33pF NP0 ±5% 1206 Multilayer Ceramic Capacitors MLCC - SMD/SMT | LCSC Electronics
CC1206JRNPO0BN180 YAGEO Capacitors | 100V 18pF NP0 ±5% 1206 Multilayer Ceramic Capacitors MLCC - SMD/SMT | LCSC Electronics
-decoupling za IC preko +Vcc i -Vee ide 1uF X7R 50Vmin
GRM31CR72A105KA01K Murata Electronics Capacitors | 100V 1uF X7R ±10% 1206 Multilayer Ceramic Capacitors MLCC - SMD/SMT | LCSC Electronics
-JFE2140
JFE2140DR Texas Instruments Transistors/Thyristors | 2 N-Channel 40V SOIC-8 JFETs | LCSC Electronics
-OPA1655 SOIC-8
OPA1655DR Texas Instruments Amplifiers/Comparators | Monaural SOIC-8 Audio Amplifiers | LCSC Electronics
a može i manja pakunga SOT-23-5
OPA1655DBVR Texas Instruments Amplifiers/Comparators | SOT-23-5 Audio Amplifiers | LCSC Electronics
-trimmpot takav da ima štelanje sa strane, jer čemo raditi rupicu u jedan Shilding poklopac koji če biti zalemljeni (2KOM) sa obe strane PCBja modula
3324(G ili J), G se nešto lakše zalemi, ali je J daleko najeftiniji,
3224J-1-202E BOURNS Resistors | ±10% ±100ppm/℃ 250mW 2kΩ SMD-3P,4.6x3.5mm Potentiometers, Variable Resistors | LCSC Electronics
-ZXTP2027 i ZXTN2018
ZXTN2018FTA Diodes Incorporated Transistors/Thyristors | 60V 1.2W 100@10mA,1V 5A NPN SOT-23 Bipolar (BJT) | LCSC Electronics
ZXTP2027FTA Diodes Incorporated Transistors/Thyristors | 60V 1.2W 80@4A,2V 4A PNP SOT-23 Bipolar (BJT) | LCSC Electronics
Shilding PCBja (kao što smo več prije predvidjeli za ULNA BJT ) nešto na lageru, Masach, pogodno...
dimenzije?, zapravo koliko možeš dvostrano SMDjima, inače PCB 4slojna (2slojna min)
Možda da odradimo sa 49x35x7,5mm
MS490-10S Masach | Mouser Europe
mislim da sam jih sve izredao
LP
Dragan
Dragan