FreeCalypso > hg > freecalypso-schem2
comparison venus/src/MCL @ 61:fdc67fac0507
transistor for driving the buzzer
| author | Mychaela Falconia <falcon@freecalypso.org> | 
|---|---|
| date | Wed, 01 Dec 2021 18:39:48 +0000 | 
| parents | c661a87159c2 | 
| children | a1b55af7f04d | 
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| 60:c661a87159c2 | 61:fdc67fac0507 | 
|---|---|
| 907 # Dual NPN transistor for LPG and PWL LEDs | 907 # Dual NPN transistor for LPG and PWL LEDs | 
| 908 Q402: | 908 Q402: | 
| 909 part=UMH9 | 909 part=UMH9 | 
| 910 slotmap=slotmap/Q402 | 910 slotmap=slotmap/Q402 | 
| 911 | 911 | 
| 912 # Mighty NPN transistor for driving the magnetic buzzer | |
| 913 Q405: | |
| 914 manufacturer=Rohm | |
| 915 manufacturer_part_number=2SD2114KT146V | |
| 916 description=Medium power NPN transistor, SMT3/SC-59 | |
| 917 vendor=Digi-Key | |
| 918 vendor_part_number=2SD2114KT146VCT-ND | |
| 919 pinout=2SD2114K.pinout | |
| 920 npins=3 | |
| 921 | |
| 912 Q600: | 922 Q600: | 
| 913 part=EMB9 | 923 part=EMB9 | 
| 914 slotmap=slotmap/Q600 | 924 slotmap=slotmap/Q600 | 
| 915 | 925 | 
| 916 Q601: | 926 Q601: | 
| 1154 npins=2 | 1164 npins=2 | 
| 1155 | 1165 | 
| 1156 R417: | 1166 R417: | 
| 1157 hier=mob.audio_hso.Detect_pullup | 1167 hier=mob.audio_hso.Detect_pullup | 
| 1158 value=220k | 1168 value=220k | 
| 1169 footprint=0402 | |
| 1170 npins=2 | |
| 1171 | |
| 1172 # external base resistor for Q405 | |
| 1173 R418: | |
| 1174 value=750R | |
| 1175 footprint=0402 | |
| 1176 npins=2 | |
| 1177 | |
| 1178 # external B-E resistor for Q405 | |
| 1179 R419: | |
| 1180 value=22k | |
| 1159 footprint=0402 | 1181 footprint=0402 | 
| 1160 npins=2 | 1182 npins=2 | 
| 1161 | 1183 | 
| 1162 # attenuators in the Tx path from Rita to PA | 1184 # attenuators in the Tx path from Rita to PA | 
| 1163 part chip_atten: | 1185 part chip_atten: | 
