It is also possible to use other H-bridges like the tle4207 (supply voltage up to 45v) or the opamp L272D, therefore the 2,2uF condensator is never needed. Please change also the 3.3uF to 10uF/6v.

If using the si9986 please check the voltage behind the diode bridge, a level of 14v is ok. Voltage over 15v destroy the H-Bridge!

Source of supply: Electronic parts or complete sets of decoder you can order from Andreas Bergmann or Joachim Katzer (Web).
Electronic distributors: Bürklin | Conrad Electronic | Future Electronics | Ineltec | Insight | Mütron | Reichelt | RS-Components | Spoerle |

Data Sheets:
FDC6303N Dual N-Channel MOSFET
PIC12CE519 8-Pin Microcontroller
SI9986CY 1A/15v 8-Pin H-Bridge
tle4207 0.8A/45v 14-Pin H-Bridge
L272D 1A/28v 14-Pin Operational Amplifiers
International Rectifier
Fairchild
Philips

PCB's:
PDF double sided 13 x 14 x 6 mm with Dualmosfets and brown-out from Joachim Katzer (Web) with source and HEX code
PDF double sided 12 x 15 x 6 mm with si9986 H-Bridge and brown-out from Joachim Katzer (Web)
PDF double sided 9.5 x 14.4 x 3.5 mm with si9986 H-Bridge and brown-out from Joachim Katzer (Web)

PDF double sided 13x13mm with L272D Opamp as H-Bridge and brown-out from Joachim Katzer (Web)
PS / PCB double sided 10x15mm with tle4207 H-Bridge
PS / PCB single sided 20x15mm with tle4207 H-Bridge
PS / PCB single sided 17x19mm with si9986 H-Bridge
You can edit the PCB files with the PROTEL layout software. Demo software is downloadable from the MERG Homepage