AC-in, DC-out Baristors
Buildings block for application in power supplies
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Materials
Gerber file
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.
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Component list
Component List
here: 180533-016-00
here: 180533-007-00
Single-threshold Baristor / PCB 160512-1 v.1.1 / Circuit Figure◦1.
Resistors
R1,R2 = 680Ω 5%, 0.25W
R3 = 5.1kΩ 1%, 0.25W
R4 = 220kΩ 5%, 0.25 W
P1 = trimpot, 100kΩ 20%, 0.15W, CB10LV104M Citec-TE Connectivity
◦
Capacitor
C1 = 470µF 20%, 50V, diam. 13mm, pitch 5mm
◦
Semiconductors
D1,D2,D3,D4,D5 = 1N4007
T1,T3 = BC557B
T2 = BC547B
T4 = BD139
◦
Miscellaneous
K1,K2 = 2-way PCB screw terminal block, 0.2’’ (5.08mm) e.g. Phoenix Contact MKDSN 1,5/ 2-5,08
PCB 160512-1 v1.1 from Elektor Store
◦
Component List
here: 180533-018-00
here: 180533-012-00
Single-threshold Baristor, Enhanced Version / PCB 160512-2 v.2.1 / Circuit Figure◦2.
Resistors
R1 = 56kΩ 5%, 0.25W
R2 = 1MΩ 5%, 0.25W
R3 = 180kΩ 5%, 0.25W
R4,R6 = 6.8kΩ 5%, 0.25W
R5 = 330kΩ 5%, 0.25W
R7 = 1.5MΩ 5%, 0.25W, 250V
P1 = trimpot, 100kΩ
◦
Capacitors
C1,C2,C3,C4 = 47nF, 50V, ceramic X7R, 0.1’’ pitch
C5 = 1nF, 100V, ceramic X7R, 0.1’’ pitch
◦
Semiconductors
D1,D2,D3,D4 = 1N4007
D5 = BZX79-C3V0, 3V, 500mW
T1,T4 = BCX38C, Darlington, 60V, 0.8A
T2,T5 = BC547C
T3,T6 = BD139
◦
Miscellaneous
K1,K2,K3 = 2-way PCB screw terminal block, 0.2’’ pitch (5.08mm), MKDSN 1,5/ 2-5,08
PCB no. 160512-2 v2.1 from Elektor Store
Component List
here: 180533-019-00
here: 180533-014-00
Dressed-Down Baristor / PCB 160512-3 v.1.0 / Circuit Figure 3.
Resistors
R1,R2 = 10kΩ 5%, 0.25W
R3 = 1kΩ 5%, 0.25W
Capacitor
C1 = 4700µF 20%, 50V, diam. 22mm max., pitch 5/7.5/10mm
Semiconductors
D1,D2,D3,D4,D6 = 1N4007
D5 = BZX55C4V7, 4.7V, 500mW
T1,T2,T3 = BC547C
T4 = BD440 (PNP, 60V, 4A, 7A pulse, TO-126)
Miscellaneous
K1,K2 = 2-way PCB terminal block, 0.2’’ pitch (5.08mm) 630V
PCB no. 160512-3 v1.0 from Elektor Store
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