K8022. Passive Preamp with RF remote control
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- Caitlin Fisher
- 8 years ago
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1 Total solder points: Difficulty level: beginner advanced Passive Preamp with RF remote control Two stereo line level RCA inputs One stereo RCA output to power amp Motor controlled volume control RF remote control for all functions. The remote does not need to see the receiver Self-learning code Range : up to 15m/yards depending on environment. Manual operation possible Gold plated RCA connectors Relay controlled input section Totally passive K8022 Specifications : Preamp : Inputs :...2 (line level) Outputs :...1 (line level) Input impedance :...5K ohm Output impedance :...2.5K ohm Volume control speed :.15s typ. (0 to max. volume) Dimensions :...235x165x47mm (9,5 x 6,7 x 1,9 ) Power supply :... 12VDC / 300mA Remote Control : 433MHz operation Approved design (report BLC/ according to I-ETS ) Keychain-style Battery (not included) :12V type V23GA, GP23A,... Dimensions :...39x15x57mm (1,57 x 0,6 x 2,3 ) ILLUSTRATED ASSEMBLY MANUAL H8022IP-2
2 Assembly hints 1. Assembly (Skipping this can lead to troubles! ) Ok, so we have your attention. These hints will help you to make this project successful. Read them carefully. 1.1 Make sure you have the right tools: A good quality soldering iron (25-40W) with a small tip. Wipe it often on a wet sponge or cloth, to keep it clean; then apply solder to the tip, to give it a wet look. This is called thinning and will protect the tip, and enables you to make good connections. When solder rolls off the tip, it needs cleaning. Thin raisin-core solder. Do not use any flux or grease. A diagonal cutter to trim excess wires. To avoid injury when cutting excess leads, hold the lead so they cannot fly towards the eyes. Needle nose pliers, for bending leads, or to hold components in place. Small blade and phillips screwdrivers. A basic range is fine. For some projects, a basic multi-meter is required, or might be handy Assembly Hints : Make sure the skill level matches your experience, to avoid disappointments. Follow the instructions carefully. Read and understand the entire step before you perform each operation. Perform the assembly in the correct order as stated in this manual Position all parts on the PCB (Printed Circuit Board) as shown on the drawings. Values on the circuit diagram are subject to changes. Values in this assembly guide are correct* Use the check-boxes to mark your progress. Please read the included information on safety and customer service * Typographical inaccuracies excluded. Always look for possible last minute manual updates, indicated as NOTE on a separate leaflet. 2
3 Assembly hints 1.3 Soldering Hints : 1- Mount the component against the PCB surface and carefully solder the leads 2- Make sure the solder joints are cone-shaped and shiny 3- Trim excess leads as close as possible to the solder joint AXIAL COMPONENTS ARE TAPED IN THE CORRECT MOUNTING SEQUENCE! REMOVE THEM FROM THE TAPE ONE AT A TIME! Velleman hereby certifies that the device K8022 meets the essential requirements and all other relevant stipulations of directive 1999/5/ EG and 1995/5/EC. For the complete conformity declaration check out : 3
4 Color code table 5% 1% COLOR= 2 5 4K7= ( B ) 4K7= ( ) C O D E I P E SF S DK N D GB F NL CODICE COLORE CODIGO DE CORES CODIGO DE COLORE S VÄRI KOODI FÄRG SCHEMA FARVE- KODE FARGE- KODE FARB KODE COLOUR CODE CODIFI- CATION DES COU- LEURS KLEUR KODE 0 Nero Preto Negro Musta Svart Sort Sort Schwarz Black Noir Zwart 0 C O D E 1 Marrone Castanho Marrón Ruskea Brun Brun Brun Braun Brown Brun Bruin 1 2 Rosso Encarnado 3 Aranciato Laranja Naranjado Rojo Punainen Röd Rød Rød Rot Red Rouge Rood 2 Oranssi Orange Orange Orange Orange Orange Orange Oranje 3 4 Giallo Amarelo Amarillo Keltainen Gul Gul Gul Gelb Yellow Jaune Geel 4 5 Verde Verde Verde Vihreä Grön Grøn Grønn Grün Green Vert Groen 5 6 Blu Azul Azul Sininen Blå Blå Blå Blau Blue Bleu Blauw 6 7 Viola Violeta Morado Purppura Lila Violet Violet Violet Purple Violet Paars 7 8 Grigio Cinzento Gris Harmaa Grå Grå Grå Grau Grey Gris Grijs 8 9 Bianco Branco Blanco Valkoinen Vit Hvid Hvidt Weiss White Blanc Wit 9 A Argento Prateado Plata Hopea Silver Sølv Sølv Silber Silver Argent Zilver A B Oro Dourado Oro Kulta Guld Guld Guldl Gold Gold Or Goud B 4
5 Construction IMPORTANT The construction of this kit consists of two parts : The assembly of the passive preamp. The assembly of the RF remote control unit. This manual only deals with the assembly and testing of the passive preamp. Please refer to the supplied RF remote control manuals for details on the assembly and configuration of the RF remote control unit. 1. Jumperwires 3. DIODES (Check the polarity) J1 J2 CATHODE D Resistors (check the color code) R... R1: 10 (1-0-0) R2: 1K (1-0-2) R3: 1K (1-0-2) R4: 1K (1-0-2) R5: 10K (1-0-3) R6: 10K (1-0-3) R7: 10K (1-0-3) R8: 10K (1-0-3) R9: 270 (2-7-1) R10: 18K (1-8-3) R11: 33K (3-3-3) R12: 5K6 (5-6-2) R13: 2K7 (2-7-2) R14: 18K (1-8-3) R15: 6K8 (6-8-2) R16: 6M8 (6-8-5) R17: 1K (1-0-2) R18: 1K (1-0-2) R19: 2K2 (2-2-2) R20: 10K (1-0-3) R21: 1 (1-0-B) R22: 470 (4-7-1) D1 : 1N4007 D2 : 1N4007 D3 : 1N4007 D4 : 1N4007 D5 : 1N4007 D6 : 1N4007 D7 : 1N Zener diodes (Check the polarity) CATHODE ZD1 : 4V3 ZD2 : 5V1 5. Axial coil L2 : 1µH (1-0-B) ZD... L2 5
6 Construction 6. IC socket (Watch the position of the notch) 9. Push buttons. Mount them straight against the PCB surface! IC1 : 8p IC2 : 8p SW1: TS-04PV SW2: TS-04PV 7. Capacitors C Adaptor jack. Mount it straight against the PCB surface! J... + SW - C2 : 100n (104) C3 : 100n (104) C5 : 100n (104) C6 : 100n (104) C9 : 100n (104) C10 : 100n (104) C11 : 82p (82) C12 : 22p (22) C13 : 330p (331) C14 : 1p (1) C15 : 3p3 (3.3) C16 : 330p (331) C17 : 2p2 (2.2) 8. Transistors SK1 : DJ RCA connectors. Mount them straight and against the PCB SK2: MJ-523AG/B BLACK SK3: MJ-523AG/R RED SK4: MJ-523AG/B BLACK SK5: MJ-523AG/R RED SK6: MJ-523AG/B BLACK SK7: MJ-523AG/R RED 12. Tuning coil T1 : BC547C T2 : BC547C T3 : BC557C T4 : BC557C T5 : BF199 T6 : BC547C L1 : MC1.5T 6
7 Construction 13. Relay 16. Potentiometer. Mount it straight and against the PCB Connect as shown RY... RY1 : VR1D122C 14. Electrolytic capacitors (Watch the polarity!) C... C1 : 1000µ / 25V C4 : 470µ / 25V C7 : 1000µ / 25V C8 : 470µ / 25V C18 : 1µ / 50V 15. Voltage regulators VR... RV1 Connect the motor to the PCB by means of two wire jumpers VR1 : 7809 VR2 : 7806 M+ M- 7
8 Construction 17. Mounting the LED s. Check the polarity! Short lead = Cathode or -! CATHODE LD... IMPORTANT Mount these LED s exactly like in the drawing, otherwise some LED s will not fit correctly in the front panel. Please also use the front panel as a positioning reference. First: Bend the leads exactly like the drawing. Next: Solder one lead, and check the position, if necessary correct by heating the soldering. Last: Solder the second connection. LD1 LD2 7mm LD3 LD4 7mm 11mm LD5 LD... CATHODE 8
9 Construction 18. IC s (Watch the position of the notch!) IC1 : VK8022 (programmed PIC 12CE518) IC2 : LM258 or eq. 19. Mounting the PCB into the enclosure Make sure to remove the protective foil from the front and rear panel! Stick the supplied rubber feet onto the bottom of the enclosure. 9
10 Adjustment & testing 20. Adjustment and testing Inspect the complete assembly once more before applying power to the unit! An adaptor jack allows hook-up of a suitable 12VDC / 300mA wall adaptor. Make sure the input voltage matches your domestic AC voltage. Mind the polarity! 12VDC / 300mA Plug the adaptor into a wall outlet. The left channel indicator lights and the volume control automatically turns to zero. The volume down -led will also light until the volume control has reached it s endpoint. Press any button to stop this action. Now you can perform the adjustment of the RF receiver section. Use the supplied plastic screwdriver to adjust the tuning coil L1. Press and hold any button on the remote control and slowly adjust L1 until LD5 lights with maximum brightness. Next, call on some assistance and have somebody push the remote at a distance of a couple of meters/yards, while you slowly adjust L1 again for maximum brightness of LD5. 10
11 Adjustment & testing Adjustment and testing (continued) Your K8022 is capable of grabbing and memorising the code transmitted from the Velleman two channel RF remote control transmitter. At the factory, the K8022 processor has been pre-programmed for operation without a custom code (i.e. no jumpers on remote). There is no need to enter the learn-mode if no code has been set on your remote control. Should you experience interference due to other Velleman remotes with identical code settings, then you can set a different code on your remote control (see remote control manual for how-to instructions). Once the transmitter code is set, the K8022 will need to learn and memorise it. How to operate the learn-mode: Press and hold SW1 (Channel 1) and plug-in power supply. Release SW1 LD2 will turn on briefly. Press volume down (left button) on remote. LD2 will turn on briefly to confirm. Release volume down LD1 will turn on briefly Press volume up (right button) on remote. LD1 will turn on briefly to confirm. Release volume up Channel indication (LD3&LD4) will toggle briefly. Press both remote control buttons simultaniously. Channel indication will toggle briefly to confirm. Release both buttons Volume will now turn to zero. Learning cycle is completed and the new code will be memorised. Repeat this procedure if code is not memorised correctly (e.g. due to interference). Code will be retained in case of power failure. The unit is now ready for use. Fasten the lid with the two supplied screws as shown. 11
12 Hook-up 21. Hook-up to your system TO POWER AMPLIFIER TO LINE SOURCE 1 TO LINE SOURCE 2 00:00 00:00 Hook-up the left and right outputs of your K8022 to the left and right inputs of the amplifier. You can hook up a line-level source (e.g. CD player, MD player, tuner, tape recorder,...) to each input channel 12
13 Operation 22. Operation Channel I indicator Channel I selector. Push to select channel I. Channel II selector. Push to select channel II. Channel II indicator Volume down -indicator. Lights when volume down is pressed on remote control. Volume control. Turn clockwise to increase volume Volume up -indicator. Lights when volume up is pressed on remote control. Remote control : Affix the supplied sticker to the housing. Velleman ,92 MHz SRFCE 1 2 Volume down -pushbutton. Push to reduce volume Volume up -pushbutton. Push to increase volume Press both buttons simultaniously to toggle between CH I and CHII 13
14 PCB 23. PCB layout RV1 D5 T2 M+ LD1 SK7 SK6 SK5 SK4 SK3 SK2 R CH2 L R CH1 L R OUT L NO1 NO2 NC2 COM2 D7 NC1 COM1 RY1 C2 C1 T6 R20 Input section J1 D6 R2 D3 D4 T1 T3 T4 How to operate learn mode: -Press and hold SW1 at power-up -LD2 will turn on briefly C9 -Press 'volume down' on remote M- -LD2 will turn on briefly to confirm Motor control -LD1 will turn on briefly -Press 'volume up' on remote -LD1 will turn on briefly to confirm -Channel indication will toggle briefly -Press both remote buttons -Channel indication will toggle briefly to confirm When learn cycle is completed volume will turn to 0 LD2 Velleman Kit K8022'1 R21 SK1 12VDC/300mA SW C1 + - Power supply D1 C6 C5 VR2 R1 VR1 C7 C4 D2 C3 C2 R22 C8 Reception Indicator Push transmitter Adjust L1 for max. brightness LD5 Use plastic trimtool R19 IC2 R18 R14 C12 R17 C15 T5 R9 ZD2 ZD1 Tuning RF receiver R16 C17 R15 R10 R12 R11 C13 L1 C11 C14 L2 C18 C16 R13 J2 C10 R5 IC1 Processor R6 R3 LD4 LD3 SW1 SW2 R7 R8 R4 14
15 - Diagram 24. Diagram Vp 1 C10 100n IC1 PIC12C518 8 RV1 SIG SIG M+ M M- SIG Vp R3 1K LD3 RELAY LD4 R4 1K GP0 GP1 GP2/T0CKl GP3/MCLR/Vpp GP4/OSC2 GP5/OSC1/CLKIN SK3 OUTR SIG SK2 OUTL SIG SK4 CH1L SIG SK6 CH2L SIG SK5 CH1R SIG SK7 CH2R SIG Vp R5 RY1 VR1D122C Vp R6 Vp Vp R8 R7 10K Right Left CODE SW1 SW2 Vr 1N4148 D7 R20 T6 10K BC547 RELAY Right *Values are subject to changes in the interest of product improvement Refer to partlist and/or added notes for actual values and references Vrx R9 270 C17 2p2 Vrx R16 6M8 R10 18K C18 C11 82p 8 4 IC2B 6 R15 R14 IC2A 7 3 6K8 18K CODE 1 5 1µ 2 Vrx Vrx C16 330p C15 3p3 L1 1T5 R19 2K2 LM258 R11 33K R18 1K R17 1K C12 22p C14 1p T5 BF199 LD5 R12 5K6 ZD2 4V7 ZD1 4V3 L2 1µH C13 330p R13 2K7 Vm R1 22E/0.6W T2 BC547 R2 1K T1 BC547 Vm D2 VR2 UA7805 Vr D4 1N4007 D3 1N4007 Vp I O 1N4007 LD2 LD1 R C8 C7 C6 100n 470µ 1000µ C5 100n LED3RL M+ LED3RL M- Left C9 VR1 UA7809 SK1 DCJACK D n Vrx I O SW T4 1N4007 D6 1N4007 D5 T3 1N4007 C2 BC557 BC557 C4 470µ C3 100n 100n C1 1000µ R21 1 SIG 15
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