Schematics diagrams

Washing machine system diagram front loading parts:  1. Electronic board 2. Detergent dispenser 3. Tub suspension spring 4. Tub 5. Pressure switch 6. Detergent entry tube 7. Tube between solenoid and detergent dispenser 8. Solenoid 9. Water fill hose 10. Rear counterweight 11. Drum pulley 12. Bearings 13. Heating element with NTC 14. Drain hose 15. Motor pulley 16. Motor 17. Damper 18. Drain pump 19. Pressure chamber 20. Drain filter 21. Tube between tub and filter body 22. Eco-ball 23. Door safety interlock 24. Door 25. Door seal 26. Front counterweight In a washing machine, the dirt in the fibres is removed by a combination of mechanical and chemical  actions. The solenoid valve ducts water through the detergent dispenser, where it collects the detergent and passes  into the tub. The correct water level is controlled by one or more pressure switches. The fabrics loaded into the drum are maintained in cons...

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Based on features and cost, I selected the X-TRONIC 4000 rework station for my use. I ordered one and received it three days. If you've never used one of these stations before, may I suggest that you practice on a scrap PCB that has both large and small SMDs on it? I used an a old, discarded printer PCB. The soldering iron works very well and it's temperature controlled and is also ESD safe. As for the hot air nozzle, I removed small SMD devices with ease. I applied some rosin flux to the leads of a 100-pin IC and then I slowly moved the hot air nozzle (temp set to 300 degrees C.) around the it to preheat the IC's soldered leads. After about 30 seconds, I increased the hot air temperature to about 400 degrees C and continued moving around the IC, melting the solder. Using the "IC popper" gadget, I gently lifted the IC away from the pcb. The magnifying lens/lamp helped my old eyes to see the more clearly.  "X-TRONIC" MODEL #4040 - 4000 SE...

The sealed subwoofer box is a better choice if space is extremely tight, but the ported subwoofer  box will produce 3dB more output at the same power if you have the extra space to work with. • The subwoofer box diy design project recommendations listed above  are external dimensions which assume the use  of 3/4" (19mm) thick material. If you are using  5/8" (16mm) thick material, subtract 1/4"  (6.5mm) from each dimension. Do not use any  material with a thickness of less than 5/8"  (16mm) as this may compromise the rigidity of  the enclosure. • All subwoofer box volumes listed above are net  internal volumes! Driver displacement, port  displacement and brace displacement must be  added to obtain the final gross internal volume.  All enclosure dimensions above have already  taken this into acount. • When using two subwoofers in a common  enclosure simply double the required volume  and, in the case of a po...

Many loudspeaker systems incorporate  PolySwitch devices for  overcurrent protection. By tripping  during high-current conditions and  resetting when no longer needed,  PolySwitch devices provide reliable  protection without the nuisance  and replacement costs  associated with fuses. The Problem Today’s speakers are generally  designed and sold independently  of amplifiers. Thus, mismatches  may occur, which can lead to damage.  Also, the advent of digital  recordings and compact discs  places extra burdens on sound  systems. Speaker damage can  result from a number of factors,  including the following situations: • High-power amplifiers used with  low-power speakers may simply  overdrive the speaker coils with  excessive power during sustained high volume. • Low-power amplifiers may be  overdriven so that clipping  occurs. This causes an upward  frequency shift of power...

Double-time-constant schematic diagram for Incandescent Light Dimming, Heat Control, and Motor Speed Control The schematic shown is a doubletime- constant circuit which has improved performance. This circuit uses an additional RC network to extend the phase  angle so that the Triac can be triggered at small conduction  angles. The additional RC network also minimizes any  hysteresis effect. Source: Power Thyristor application note, Littelfuse

Standard conventional and circular fluorescent  lamps with filaments can be ignited easily and much  more quickly by using Thyristors instead of the mechanical  starter switch, and solid state Thyristors are more reliable. Thyristors produce a pure solid state igniting circuit with  no mechanical parts in the fluorescent lamp fixture. Also,  because the lamp ignites much faster, the life of the  fluorescent lamp can be increased since the filaments are  activated for less time during the ignition. The Thyristor  ignition eliminates any audible noise or flashing off and on  which most mechanical starters possess. Figure shows a circuit for igniting a fluorescent  lamp with 240 V line voltage input using Triac and DIAC  networks. Figure illustrates a schematic using a SIDAC phase  control network to ignite a 240 V ac fluorescent lamp. The one major  change is that two K2400E devices in series are used to  accomplis...