Posted By: busy (Slavko Labsky) on 'CZancient' Title: Prevodnik TTL-RS232 Date: Tue Jan 16 07:57:17 1996 Schema zapojenia konvertoru TTL <=> RS232 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ S diskretnymi suciastkami (zjednodusena) 2k7 Ucc-----|===|----*-------> RxD (TTL) | /~~~~~ TxD (RS232) 3k3 | C | KC148 >-------------|===|--*-----| B | | | E | -- _____/ KA262 / | -- | | | ~~~ ~~~ RxD (RS232) 220 <----------------*-----|===|----Ucc | /~~~~~ | C | 1k0 KC639 | B |----|===|-----< TxD (TTL) | E | _____/ | ~~~ GND (RS232) o----------------*--------------------o GND (TTL) | ~~~ Konveror s integrovanym obvodom MAX232 (Amaterske Radio AR 10/94 15 strana) Ucc | | 16 Ucc 1------------------2 + | -----------| C1+ V+ |-----||----* | + 3| | 10 uF | ----||-----| C1- | === 100 nF 10 uF 4| |6 + | -----------| C2+ V- |-----||----* | + 5| | 10 uF | ----||-----| C2- | ~~~ 10 uF | MAX232 | 11| |14 TTL ------| T1I T10 |------ TxD 10| |7 ---| T2I T20 |--- | | 13| |12 RxD ------| R1I R10 |------ TTL 8| |15 ---| R2I GND R20 |--- ------------------ | 15 ~~~ (Pre Liane bbs nakreslili Noro & Busy)