Labc1 • 1 lead acid battery charger kit ramsey electronics model no. Labc1 an educational kit that will come in handy around the shop and garage. Build your own charger instead of shelling out big bucks for a “store bought” unit. You might learn more than you ever wanted to know about batteries and ...
Labc1 • 2 ramsey transmitter kits • fm100b professional fm stereo transmitter • fm25b synthesized stereo fm transmitter • mr6 model rocket tracking transmitter • tv6 television transmitter • cube television transmitters ramsey receiver kits • fr1 fm broadcast receiver • ar1 aircraft band receiver • ...
Labc1 • 3 lead acid battery charger kit ramsey publication no. Mlabc1 price $5.00 quick battery theory .................. 4 circuit description ....................... 6 schematic diagram .................... 8 parts layout diagram ................. 9 parts list .................................... ...
Labc1 • 4 quick battery theory to begin, we should cover a few facts about lead acid batteries in general. Most traditional historians date the invention of batteries to the early 1800’s when experiments by alessandro volta generated electrical current from chemical reactions between dissimilar meta...
Labc1 • 5 solution. As more energy is drained from the battery, the ratio of sulfuric acid to water decreases and the created lead sulfate byproduct begins forming on the electrode plates. A low hydrometer reading means the chemical makeup that generates the free electrons is diminished so not as mu...
Labc1 • 6 plates on a regular basis or over an extended period of time, the charging process will not be able to restore the battery to its former full potential. Time to make a costly battery replacement! Circuit description the labc1 has been designed as a dependable workhorse to charge and hold y...
Labc1 • 7 batteries. Granted, that might take a while. The other support components on the board help vr1 to know when to adjust its output voltage up or down to ensure the proper charging rate of the battery. These other components are grouped into two major sections, the soc feedback loop and the ...
Labc1 • 8.
Labc1 • 9 labc1 parts layout diagram.
Labc1 • 10 parts supplied with your labc1 kit capacitors 1 10 µf electrolytic capacitor [c2] 1 1000 µf electrolytic capacitor [c1] resistors and potentiometers 1 0.47 ohm, 1 watt (yellow-violet-silver) [r6] 1 270 ohm (red-violet-brown) [r1] 3 820 ohm (gray-red-brown) [r3,7,9] 1 10k ohm (brown-black-...
Labc1 • 11 ramsey "learn-as-you-build kit assembly there are numerous solder connections on the labc1 printed circuit board. Therefore, please take us seriously when we say that good soldering is essential to the proper operation of your battery charger kit! • use a 25-watt soldering pencil with a c...
Labc1 • 12 labc1 battery charger kit assembly although we know that you are anxious to complete the assembly of your battery charger kit it is best to follow the step-by-step instructions. Try to avoid the urge to jump ahead installing components. Since you may appreciate some warm-up soldering prac...
Labc1 • 13 5. Install c1, 1000 µf electrolytic capacitor. This part also must be installed properly to function. In fact, this capacitor has the potential to explode if installed in reverse polarity. The pc board silkscreen shows the positive hole and the band on the capacitor shows the negative sid...
Labc1 • 14 take a moment now to check your previous solder joints for “opens” where the solder did not completely flow around the connection, or solder bridges between closely spaced pads. It seems the best time to identify these problems is now when you’re focused on this section of the board, savi...
Labc1 • 15 right, you can do it with the rest. These will all be mounted in stand-up fashion, just like d17 was a few steps ago. Again, the body of the part is placed in the hole with the circle around it and the other lead is bent up and around to fit into the other hole. The banded end should be f...
Labc1 • 16 assembly instructions for custom case the enclosure is a key element to the overall pride you will have upon completing your ramsey kit. The enclosure will show how you were able to “build from scratch” a commercial piece of high-tech electronics. For some of us, the enclosure will also h...
Labc1 • 17 adjusting your labc1 battery charger now that you have finished the assembly stage there is only one more step before you start charging your batteries. The necessary alignment is to adjust r2 for the proper ‘float’ voltage with reference to the current air temperature around diodes d5 to...
Labc1 • 18 safety considerations all lead-acid batteries produce hydrogen and oxygen gas during the electro- chemical recharging process. The production of these gases is increased if overcharging occurs, commonly caused by too high of a charge voltage. Sealed battery designs plan on the recombinati...
Labc1 • 19 that r4 is used in the soc feedback loop that varies the charging terminal voltage in accordance with the battery’s present state. Lowering the value of r4 to 15k or less will have the effect of increasing the mode differential voltage. Initially the battery will be charged at high curren...
Labc1 • 20 troubleshooting guide if your labc1 does not work correctly after construction, recheck the following: • correct orientation of vr1, and u1 (see pc board layout diagram) • correct polarity of electrolytic capacitors • correct orientation of diodes d1 to d17 • correct orientation of transi...
Labc1 • 21 conclusion we sincerely hope that you enjoy the use of this ramsey product. As always, we have tried to compose our manual in the easiest, most user-friendly format that is possible. As our customers, we value your opinions, comments, and additions that you would like to see in future pub...
Labc1 • 22 this page intentionally left blank. Don’t you hate it when people do this? Why don’t they just admit that they ran out of things to say!.
Labc1 • 23 the ramsey kit warranty please read carefully before calling or writing in about your kit. Most problems can be solved without contacting the factory. Notice that this is not a "fine print" warranty. We want you to understand your rights and ours too! All ramsey kits will work if assemble...
Labc1 • 24 price: $5.00 ramsey publication no. Mlabc1 assembly and instruction manual for: ramsey model no. Labc1 ramsey electronics, inc. 590 fishers station drive victor, new york 14564 phone (585) 924-4560 fax (585) 924-4555 www.Ramseyelectronics.Com required tools • soldering iron ramsey wlc-100...
