BulkyModem
tebl
My significantly more expensive, slightly less capable version of the Zimodem-hardware. Surfing the BBS-world at a blazing 1200 baud (or faster)!
Components (40)
| Reference | Value | Description |
|---|---|---|
| Q1 | 2N3904 | 0.2A Ic, 40V Vce, Small Signal NPN Transistor, TO-92 |
| Q2,Q3 | 2N7000 | 0.2A Id, 200V Vds, N-Channel MOSFET, 2.6V Logic Level, TO-92 |
| U1 | Pico | |
| U2 | 74HCT244 | 8-bit Buffer/Line Driver 3-state |
| U3 | MAX232 | Dual RS232 driver/receiver, 5V supply, 120kb/s, 0C-70C |
| U5 | 74HCT04 | Hex Inverter |
| C1 | 470uF | Polarized capacitor |
| C2-C5 | 1uF | Polarized capacitor, small symbol |
| C6,C7,C17,C19 | 100nF | Unpolarized capacitor, small symbol |
| C9 | 100uF | Polarized capacitor |