Artikel
Precisie-LCR-meter
Hoge nauwkeurigheid hoeft niet duur te zijn deel 3 (slot)
In deze derde en laatste aflevering:
enige correcties in het schema;
het printontwerp en de onderdelenlijsten;
over de behuizing en de bouw;
over eerste gebruik en ijking.
Onderdelenlijst
Onderdelenlijst
hoofdprint
Weerstanden:
(SMD 0805 1%, tenzij anders aangegeven)
R1,R16,R17,R28 = 10Ohm
R2,R34 = 820 k
R3,R5,R11,R13 = 8k2
R4,R10,R47,R55,R56,R71,R72,R78,R81,R82,R94,R95 = 10 k
R6,R58,R59 = 1k8
R7,R100 = 5 k instel (Vishay-Sfernice TS53YJ502MR10)
R8,R60,R62 = 16 k
R9,R23,R25,R35,R38,R39,R41,R52,R68,R69,R70,R87,R88,R96 = 56 Ohm
R12,R14 = 5k6
R15,R97 = NC (not connected)
R18 = 10 k 0,05% 10 ppm (Panasonic ERA6ARW103V)
R19 = 1 Ohm
R20 = 1 k 0,05% 10 ppm (Panasonic ERA6ARW102V)
R21 = 100 Ohm 0,05% 5 ppm (Vishay-Dale TNPU0805100RAZEN00)
R22 = 100 k 0,05% 10 ppm (Panasonic ERA6ARW104V)
R24,R26,R27,R29,R33,R36,R37,R40,R44,R57,R64 = 100 Ohm
R30,R61,R76,R77,R80,R101 = 20 k
R31 = 750 Ohm
R32,R42,R49,R66,R93 = 100 k
R43,R84,R85,R86,R89 = 2Ohm2
R45,R73 = 39 k
R46,R90,R91 = 680 Ohm
R48,R51,R74 = 4k7
R50 = 0 Ohm
R53,R65 = 470 Ohm
R54 = 1 k
R63,R98 = 1k6
R67 = 62 Ohm
R75 = 5 k instel (Bourns 3266W-1-502LF)
R79 = 4k3
R81 = 7k5
R83 = 30 k
R92 = 430 Ohm
R99 = 2 k
Condensatoren:
(SMD type 0805 tenzij anders aangegeven)
C1,C2,C4,C10,C11,C12,C20,C26,C27,C28,C29,C31,C33,C34,C35,C36,C37,C40,C41,C43,C44,C45,C46,C47,C48,C49,C50,C51,C53,C54,C61,C63,C65,C78,C80,C86,C87,C88 = 100 n/25 V 10% X7R
C3,C9,C62,C64,C90 = 1 µ/25 V 10% X7R
C5,C13,C18 = 15 n/50 V 5% NPO, type 1206
C6,C7,C14,C15,C16,C56 = 47 n/50 V 5% NPO, type 1206
C8,C73,C89 = 1 n/50 V 5% NP0
C17,C21,C23,C55,C60 = NC (Not Connected)
C19,C25 = 150 p/50 V 5% NP0
C22,C52,C58,C59 = 1,5 n/50 V 5% NP0
C24,C32,C69,C72,C74,C75,C81,C85 = 2µ2/16 V 10% X7R
C30,C57 = 4n7/50 V 5% NP0
C38,C39,C83,C84 = 33 p 5% NP0
C42,C70 = 33 µ/6,3 V tantaal, A-behuizing (Vishay-Sprague 293D336X96R3A2TE3)
C66,C71,C82 = 10 n/50 V 10% X7R
C67,C77,C79 = 4µ7/10 V 10% X5R
C68,C76 = 470 µ/6,3 V tantaal, D-behuizing (Kemet T495D477K006ATE100)
Inducties:
L1 = dubbele inductie 20 µH, SMD (Bourns PM3602-20-RC)
L2,L3 = ferrietkraal, SMD 0805 (Murata BLM21PG221SN1D)
Halfgeleiders:
(SMD, tenzij anders aangegeven)
D1,D2,D3,D4,D5 = BAV199 (SOT23)
D6 = LED groen, 3 mm, through-hole, horizontale montage (Dialight 551-0207F)
D7 = MBR0520 (SOD123)
D8,D9 = LED rood, type 0805 (bijv. Kingbright KP-2012SURC)
D10 = BAT54A (SOT23)
U1 = OPA725AIDBV, TI (SOT23-5)
U2 = MAX7404CSA, Maxim (SOIC-8)
U3 = 74HCT4052D (SOIC-16)
U4, U20 = TLC2274AID, TI (SOIC-14)
U5 = INA128U, TI (SOIC-8)
U6,U11,U14 = OPA365DBV, TI (SOT23-5)
U7 = PGA103U, TI (SOIC-8)
U8 = 74HCT4053D (SOIC-16)
U9 = C8051F061-GQ, Silicon Laboratories (TQFP-64)
U10 = LM4040D25IDBZ, TI (SOT23)
U12 = DAC8811CDGK, TI (MSOP-8)
U13 = SN74LVC2G53DCT, TI (SM-8)
U15 = REG102GA-A, TI (SOT223-5)
U16 = LT1611CS5 Linear Technology (SOT23-5)
U17 = TPS72325DBV, TI (SOT23-5)
U18 = TLV70030DDC, TI (SOT23-5)
U19 = FT232RL, FTDI (SSOP-28)
Diversen:
Y1 = kristal 24 MHz (bijv. Euroquartz 24.000 MHz HC49/4H/30/50/40+85/18pF/ATF)
SW1 = tuimelschakelaar (RS Components, code 734-6934)
J1,J2,J3,J6,J7,J8,J17,J21,J22 = 2-pens header, male, steek 2,54 mm
J4,J5,J14 = 1-pens header, male, gebogen (zie tekst)
J10,J11,J12,J13 = BNC-connector, horizontaal, geïsoleerd (bijv. TE Connectivity 1-1337543-0)
J15 = 10-polige header HE10 (bijv. Multicomp MC9A12-1034)
J16 = 14-polige header HE10 (bijv. Multicomp MC9A12-1434)
J17 = 2-pens header, male, gebogen, steek 2,54 mm
J19 = USB-connector type B, horizontaal (bijv. TE Connectivity 292304-1)
K1 = druktoets (Omron B3F-10xx series)
print nr. 110758-1
of compleet opgebouwde en geteste print 110758-91
behuizing (Hammond 1455L1601 met belettering)
M3-boutjes, moeren, afstandsbussen, ringen
Onderdelenlijst
display/keyboard-module
Weerstanden:
(SMD 0805 1%)
R1,R2,R3,R4,R10,R11 = 4k7
R5,R6,R7,R9 = 56 Ohm
R8 = 1 k
Condensatoren:
(SMD, type 0805)
C1,C2,C3,C4,C5,C6,C7,C8,C9,C10 = 1 µ/25 V 10% X7R
Halfgeleiders:
D1,D2,D3,D4 = BAT54A (SOT23)
D5 = LED groen, 3 mm through-hole (bijv. Kingbright L-424GDT)
Q1,Q2 = N-kanaals MOSFET (SOT23) (bijv. Fairchild FDV303N)
Diversen:
U1 = grafisch display, Displaytech 64128M-FC-BW-3
J1 = 14-pens low-profile transition-header, HE10, hoogte max 5,4 mm (Harting 09 18 114 9622)
K1,K2,K3,K4,K5 = druktoets (Multicomp TS0B22)
flatcable-connector voor 14-aderige kabel (bijv. Multicomp MC6FD014-30P1)
1 m 14-aderige flatcable (waarvan 10 cm wordt gebruikt) (3M 3365-14)
print 110758-2
of compleet opgebouwde en geteste print 110758-92
hoofdprint
Weerstanden:
(SMD 0805 1%, tenzij anders aangegeven)
R1,R16,R17,R28 = 10Ohm
R2,R34 = 820 k
R3,R5,R11,R13 = 8k2
R4,R10,R47,R55,R56,R71,R72,R78,R81,R82,R94,R95 = 10 k
R6,R58,R59 = 1k8
R7,R100 = 5 k instel (Vishay-Sfernice TS53YJ502MR10)
R8,R60,R62 = 16 k
R9,R23,R25,R35,R38,R39,R41,R52,R68,R69,R70,R87,R88,R96 = 56 Ohm
R12,R14 = 5k6
R15,R97 = NC (not connected)
R18 = 10 k 0,05% 10 ppm (Panasonic ERA6ARW103V)
R19 = 1 Ohm
R20 = 1 k 0,05% 10 ppm (Panasonic ERA6ARW102V)
R21 = 100 Ohm 0,05% 5 ppm (Vishay-Dale TNPU0805100RAZEN00)
R22 = 100 k 0,05% 10 ppm (Panasonic ERA6ARW104V)
R24,R26,R27,R29,R33,R36,R37,R40,R44,R57,R64 = 100 Ohm
R30,R61,R76,R77,R80,R101 = 20 k
R31 = 750 Ohm
R32,R42,R49,R66,R93 = 100 k
R43,R84,R85,R86,R89 = 2Ohm2
R45,R73 = 39 k
R46,R90,R91 = 680 Ohm
R48,R51,R74 = 4k7
R50 = 0 Ohm
R53,R65 = 470 Ohm
R54 = 1 k
R63,R98 = 1k6
R67 = 62 Ohm
R75 = 5 k instel (Bourns 3266W-1-502LF)
R79 = 4k3
R81 = 7k5
R83 = 30 k
R92 = 430 Ohm
R99 = 2 k
Condensatoren:
(SMD type 0805 tenzij anders aangegeven)
C1,C2,C4,C10,C11,C12,C20,C26,C27,C28,C29,C31,C33,C34,C35,C36,C37,C40,C41,C43,C44,C45,C46,C47,C48,C49,C50,C51,C53,C54,C61,C63,C65,C78,C80,C86,C87,C88 = 100 n/25 V 10% X7R
C3,C9,C62,C64,C90 = 1 µ/25 V 10% X7R
C5,C13,C18 = 15 n/50 V 5% NPO, type 1206
C6,C7,C14,C15,C16,C56 = 47 n/50 V 5% NPO, type 1206
C8,C73,C89 = 1 n/50 V 5% NP0
C17,C21,C23,C55,C60 = NC (Not Connected)
C19,C25 = 150 p/50 V 5% NP0
C22,C52,C58,C59 = 1,5 n/50 V 5% NP0
C24,C32,C69,C72,C74,C75,C81,C85 = 2µ2/16 V 10% X7R
C30,C57 = 4n7/50 V 5% NP0
C38,C39,C83,C84 = 33 p 5% NP0
C42,C70 = 33 µ/6,3 V tantaal, A-behuizing (Vishay-Sprague 293D336X96R3A2TE3)
C66,C71,C82 = 10 n/50 V 10% X7R
C67,C77,C79 = 4µ7/10 V 10% X5R
C68,C76 = 470 µ/6,3 V tantaal, D-behuizing (Kemet T495D477K006ATE100)
Inducties:
L1 = dubbele inductie 20 µH, SMD (Bourns PM3602-20-RC)
L2,L3 = ferrietkraal, SMD 0805 (Murata BLM21PG221SN1D)
Halfgeleiders:
(SMD, tenzij anders aangegeven)
D1,D2,D3,D4,D5 = BAV199 (SOT23)
D6 = LED groen, 3 mm, through-hole, horizontale montage (Dialight 551-0207F)
D7 = MBR0520 (SOD123)
D8,D9 = LED rood, type 0805 (bijv. Kingbright KP-2012SURC)
D10 = BAT54A (SOT23)
U1 = OPA725AIDBV, TI (SOT23-5)
U2 = MAX7404CSA, Maxim (SOIC-8)
U3 = 74HCT4052D (SOIC-16)
U4, U20 = TLC2274AID, TI (SOIC-14)
U5 = INA128U, TI (SOIC-8)
U6,U11,U14 = OPA365DBV, TI (SOT23-5)
U7 = PGA103U, TI (SOIC-8)
U8 = 74HCT4053D (SOIC-16)
U9 = C8051F061-GQ, Silicon Laboratories (TQFP-64)
U10 = LM4040D25IDBZ, TI (SOT23)
U12 = DAC8811CDGK, TI (MSOP-8)
U13 = SN74LVC2G53DCT, TI (SM-8)
U15 = REG102GA-A, TI (SOT223-5)
U16 = LT1611CS5 Linear Technology (SOT23-5)
U17 = TPS72325DBV, TI (SOT23-5)
U18 = TLV70030DDC, TI (SOT23-5)
U19 = FT232RL, FTDI (SSOP-28)
Diversen:
Y1 = kristal 24 MHz (bijv. Euroquartz 24.000 MHz HC49/4H/30/50/40+85/18pF/ATF)
SW1 = tuimelschakelaar (RS Components, code 734-6934)
J1,J2,J3,J6,J7,J8,J17,J21,J22 = 2-pens header, male, steek 2,54 mm
J4,J5,J14 = 1-pens header, male, gebogen (zie tekst)
J10,J11,J12,J13 = BNC-connector, horizontaal, geïsoleerd (bijv. TE Connectivity 1-1337543-0)
J15 = 10-polige header HE10 (bijv. Multicomp MC9A12-1034)
J16 = 14-polige header HE10 (bijv. Multicomp MC9A12-1434)
J17 = 2-pens header, male, gebogen, steek 2,54 mm
J19 = USB-connector type B, horizontaal (bijv. TE Connectivity 292304-1)
K1 = druktoets (Omron B3F-10xx series)
print nr. 110758-1
of compleet opgebouwde en geteste print 110758-91
behuizing (Hammond 1455L1601 met belettering)
M3-boutjes, moeren, afstandsbussen, ringen
Onderdelenlijst
display/keyboard-module
Weerstanden:
(SMD 0805 1%)
R1,R2,R3,R4,R10,R11 = 4k7
R5,R6,R7,R9 = 56 Ohm
R8 = 1 k
Condensatoren:
(SMD, type 0805)
C1,C2,C3,C4,C5,C6,C7,C8,C9,C10 = 1 µ/25 V 10% X7R
Halfgeleiders:
D1,D2,D3,D4 = BAT54A (SOT23)
D5 = LED groen, 3 mm through-hole (bijv. Kingbright L-424GDT)
Q1,Q2 = N-kanaals MOSFET (SOT23) (bijv. Fairchild FDV303N)
Diversen:
U1 = grafisch display, Displaytech 64128M-FC-BW-3
J1 = 14-pens low-profile transition-header, HE10, hoogte max 5,4 mm (Harting 09 18 114 9622)
K1,K2,K3,K4,K5 = druktoets (Multicomp TS0B22)
flatcable-connector voor 14-aderige kabel (bijv. Multicomp MC6FD014-30P1)
1 m 14-aderige flatcable (waarvan 10 cm wordt gebruikt) (3M 3365-14)
print 110758-2
of compleet opgebouwde en geteste print 110758-92
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