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Содержание VFD48-1202FN

Страница 1: ...USB Powered VFD48 Analog style Unique Round VFD Clock Assembly Instructions V1 0 zjjszhangf gmail com HTTP vfdclock jimdo com...

Страница 2: ...5 Step 4 Negative High Voltage part circuit 6 Step 5 CDS and IR part 7 Step 6 VFD drive Chip 8 Step 7 First Testing 9 Step 8 Cleaning Circuit Board 10 Step 9 Buzzer part 11 Step 10 Buttons part 12 Ste...

Страница 3: ...any equipments of the KIT or you may not be able to get the clock working If already have the skill of soldering the SMD components it is easy for you to assemble the clock please check the circuit d...

Страница 4: ...heck all the components in the kit bag make sure nothing is missing You can do this on a A4 white copy paper 3 We recommend using a soldering station and small soldering tip for soldering this kit we...

Страница 5: ...two components you can plug the USB power in and measure the fuse output pad to see if it has 5V output The next part of this step is soldering the main MCU chip it is a LQFP32 package MCU with 105K6T...

Страница 6: ...ct direction please control the iron s temperature and solder it fast and take care of the ESD Electro Static Discharge control Then solder the diodes D1 in sot 23 package with 5C6 mark and the 0u1F c...

Страница 7: ...th the HV part circuit This part of the MOSFETs components are SOTt23 3 MOSFET A1SHB A2SHB mark and resistors and capacitors please do not change the C3 C4 1uF 50V capacitors value only use the caps i...

Страница 8: ...up in a little bit dark red color Or you can measure the filament pins with oscillograph you can see the AC output Step 4 Negative High Voltage part circuit The Negative High Voltage part circuit is m...

Страница 9: ...ed correctly it will have 25V or 25V HV output Step 5 CDS and IR part The CDS and the IR part optional will be easy We recommend you to solder the CDS part first with two 22K resistors and one CDS sen...

Страница 10: ...QFP 44 package Use the same skill of soldering the MCU to solder this chip Also please double check the chips pins carefully after soldering Please note that the PT6315 chip may have two round hole ma...

Страница 11: ...clock will started displaying and ticking please check all the segments inside the panel to see if can be light up correctly If some segments do not light up please check if some legs of the panel did...

Страница 12: ...ng alcohol and a toothbrush to remove the solder flux on the PCB If available the anhydrous alcohol used for electronics cleaning works much faster Blot the cleaned area with a non linting tissue like...

Страница 13: ...1 Digital Transistor Note If damaged this component you can replace it with the SI2302 A2SHB N MOSFET Then Solder the buzzer part we have two types of the buzzer one is the SMD Version the other is th...

Страница 14: ...you can solder those buttons directly or we recommend that you use long flat nose pliers to band the button legs straight then you can plug the buttons inside the PCB holes and then solder the legs St...

Страница 15: ...to solder the left and right two legs first then adjust the high of the legs by using the solder to make sure the panel has the same height at the both sides Then you can use sharp scissors to cut al...

Страница 16: ...d you band the IR receiver legs in 90 degrees aware the direction then plug it inside the PCB holes then solder it Because of the IR receiver is heat sensitive equipment please control the temperature...

Страница 17: ...C3 C4 C8 C10 3 10uF 50V C EUC0603 0805 C1 C11 C12 Inductor 1 10uH INDUCTANCE3018 L1 100 Diode 1 5C6 BAT54CBIG D1 5C6 1 A7 BAV99 SOT23 D2 A7 1 6V5 D ZENERSOD80C DZ1 Glass diode Misc 1 BUZZER DIP SMD B...

Страница 18: ...16 Circuit and PCB You will find the circuit paper inside the KIT...

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