Partlist for the Microcontroller bases DC power supply ------------------------------------------------------- Parts for main board: ===================== Capacitors: C1 27pf C2 27pf C3 10uF C4 10nF C10 10nF C11 1nF C12 10nF C13 100p C14 100p C18 0.1uF C20 0.1uF C21 0.1uF Biased Capacitors (16V unless otherwise stated): C15 1000uF, 25V C16 100uF C17 470uF, 25V C5 1uF C6 1uF C7 1uF C8 1uf C9 10uF C19 10uF Semiconductors: D1 4.3V ZENER-DIODE Z-DIODE 4.7V ZENER-DIODE D2 1N4148 D3 1N4148 D4 1N4148 D7 1N4148 D5 1N4001 D9 1N4001 IC1 AT90S4433P IC2 MAX232 IC3 7805 Voltage regulator IC4 TL081P or TL071 IC6 TL082P or TL072 T1 BC547 transistor-npn T3 BD379, TO126 transistor-npn + small aluminium metal sheet for cooling (2 x 4 cm is sufficient) T4 BC557 transistor-pnp LCD display 2 lines with 16 or 20 characters, HD44780 compatible. LED red LED green Q1 4.0MHz crystal Resistors: R24 100 R41 100 R10 10k R14 10K R20 10k R21 10k R25 10K R9 10k R4 1.8k R40 1.8k R19 1k R7 1k R8 1k R17 1M R34 1M R12 220 R23 2.2k R28 22k R30 22k R6 22k R15 27k R26 2.7k R32 2.7K R1 470 R11 470 R13 470 R3 470 R16 47k R18 4.7K R2 47k R22 4.7k R27 4.7k R29 4.7k R31 4.7k R39 47k R5 4.7k R38 33k(if Imax=3A), 120K(if Imax=2.2A)=> depends on the transformer used for the power part. Mechanical parts: Mini stripe connectors for the programmer cable. Bannana connectors power connector RS232 connector (female) 7 small push buttons power on/off switch Transformer 9V, 100mA IC sockets: 2 x 8pin 1 x 16 pin 2 x 14 pin (or 1 x 28 pin 7.5mm, for atmel cpu) Parts for power part: ===================== option 1) 0-16V Imax=2.2A -> transformer 15V 2.5A option 2) 0-24V Imax=2.2A -> transformer 24V 2.5A option 3) 0-30V Imax=3A -> transformer 30V 3A C1 10uF, 63V C2 4700uF, 63V C3 0.1uF Diodes: 6 x 1N5400 or SB350 R1 6.8k R24 5.6k T1, T2: 2N3055 or BD745 or BD743 (for option 3 take 2N3055, for all others take any of the 3 transistors) Note: make sure that the power transistors have a current amplification factor (known as hfe) of 30 or higher. Modern multimeters can measure the hfe. It's a good idea to take such a multimeter and 3 cables with you to the shop and measure the hfe before you buy the transistors. R25 8 x 2.2 Ohm 1/4W R18 4 x 1 Ohm 1/4W R19 4 x 1 Ohm 1/4W Very big aluminium cooler, about 1.5 K/W