Description
Small surface mount Hbridge for 1A or so, using super-beta output stages for very low voltage dropout. Adjust R5 and R6 for supply voltage (example: 220ohms for 5V, 470ohms for 12V). Bridge rectifier provides the free-wheeling diodes in one package.
Schematic
Board
Bill of Materials
Designator | Value | Description |
---|---|---|
B1 | DF005S | Surface Mount Glass Passivated Bridge Rectifiers |
C1 | 220nF | CAPACITOR, European symbol |
C2 | 220uF | POLARIZED CAPACITOR, European symbol |
R1 | 4k7 | RESISTOR, European symbol |
R2 | 4k7 | RESISTOR, European symbol |
R3 | 4k7 | RESISTOR, European symbol |
R4 | 4k7 | RESISTOR, European symbol |
R5 | 220 | RESISTOR, European symbol |
R6 | 220 | RESISTOR, European symbol |
R7 | 4k7 | RESISTOR, European symbol |
R8 | 4k7 | RESISTOR, European symbol |
U$1 | PBSS4032SPN | PBSS4032SPN dual NPN/PNP high current switchers |
U$2 | PBSS4032SPN | PBSS4032SPN dual NPN/PNP high current switchers |
U$3 | BC847BS | BC847BS dual NPN |
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This project is © Mark Tillotson, and is published under the terms of the Creative Commons Attribution-ShareAlike 3.0 Unported licence.