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Manual Ramsey Electronics DN1

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  • Ramsey Electronics DN1 - page 1

    DN1 • 1 Dr . NiCad BA TTER Y CONDITIONER/ RAPID CHARGER Ramsey Electronics Model No. DN1 Stop shelling out a fortune on bat teries ! E njoy full performance from your NiCad batteries or ba ttery packs with this sensational • Quick charges batteries for laptop computers, hand-held radios and scanners, cordless /cellular phones, camcorders, RC mo ...

  • Ramsey Electronics DN1 - page 2

    DN1 • 2 RA MSEY TRA NSMITT ER KITS · FM10A FM25B FM Stereo Tr ansmitters · FM100B Professional Qualit y FM Stereo Transmitter · TV6 Television Tra nsmitter · AM 1, AM 25 AM T r an s mi t te r s RAMSE Y RECEIV ER KITS · FR1 FM Broadcast Receiver · AR1 Ai r c ra f t Ba n d Re ce i ve r · SR2 Shortwave Receiver · AA 7 Active An tenna · SC1 ...

  • Ramsey Electronics DN1 - page 3

    DN1 • 3 Dr . NiCad NiCad BA TTER Y CHARGER/CONDITIONER Ramsey Publication No. MDN1 Price $5.00 TABLE OF CONTENTS Introduction to the DN1 ................. 4 How it works ............... ................... 6 Parts list ..................... ................... 8 Schematic diagram ....................... 9 Parts Layout diagram .................. 1 ...

  • Ramsey Electronics DN1 - page 4

    DN1 • 4 INTR ODUC TIO N With today’s e ver changing technologies, more appliances dep end on battery power to enable t heir use. W hile this gives us greater freedom, it is often at the high cost of purchasing portable ener gy, or batteries, to run our portab le electronic gismos. Consider the cost of energy from our local electric company, abo ...

  • Ramsey Electronics DN1 - page 5

    DN1 • 5 oxidation reduction or “redox" chemical reaction in the cell, we effectively decrease th e chemically active sur face area inside the cell. The lo w er this surface area, the shorter the ba ttery’s life. Since you don’t try to recharge convention al batteries, yo u’ve never noticed this propert y until you star ted to use rec ...

  • Ramsey Electronics DN1 - page 6

    DN1 • 6 We designed our kit to change quickly and easil y adapt to a variet y of cell or battery pack typ es f or anything from video camcor ders to cordless phones. You can configure it for the number of batteries in your pack, discharge and charging rate. We’ll discuss this later as we’re assembling these sections of the circuit. DN1 CIRCUI ...

  • Ramsey Electronics DN1 - page 7

    DN1 • 7 Since we want the voltag e appearing at the IC to be equivalent to one cell, we first must “divide” th e cell vo ltage by the number of cells in the pac k. The ladder resistors R2 -R24 form an ef fective voltage divider circuit so th at the BAT (pin 7) voltage will be about 1. 25 V per cel l. The sw itch can increase or decrease the B ...

  • Ramsey Electronics DN1 - page 8

    DN1 • 8 DN 1 PA RTS LI ST RESISTORS  1 270 ohm [red-v iolet-brown] (R12 )  2 .5 ohm ½ Watt [green-black-silver] (R26, 27)  3 10 ohm [brown-black-black] (R 2, 10, 22)  2 470 ohm [yellow-violet-br own] (R3, 7)  4 1K ohm [brown-black-r ed] (R1, 5, 9, 25 )  2 10K o hm [brown-black -orange] (R11 , 20)  1 10K ohm 1% [brown-black-b ...

  • Ramsey Electronics DN1 - page 9

    DN1 • 9 ...

  • Ramsey Electronics DN1 - page 10

    DN1 • 10 RAMSEY Learn-As-You-Build KIT ASSEMBLY There ar e numerou s solder connec tions on the D N1 printed circuit board . Therefore, PLEASE t a k e us seriously wh en we say that good soldering is essential to the proper operation of your Doctor Nicad! • Use a 25-watt soldering pencil with a clean, sharp tip. • Use only rosin-core solder i ...

  • Ramsey Electronics DN1 - page 11

    DN1 • 11 DN1 PARTS FI NDER DIAGRAM ...

  • Ramsey Electronics DN1 - page 12

    DN1 • 12  1. Identify and install DPDT switch S2. Be sure to push the switches flat to the circuit board. Solder all six connections.  2. Install the other DPD T toggle power switch S3. Once again , be sure to push the component flush to the circuit board before soldering. We’ll start our “learn-as-you build” instructions with the pow ...

  • Ramsey Electronics DN1 - page 13

    DN1 • 13  11. Install R1, 1K ohm [brow n-black-red].  11. Install Q1, the power FET transistor [marked 7035]. Fo rm the leads as shown prior to installation. Bolt the regulator to the circuit board.  12. Install L1, the large axial leaded w ire wound inductor.  13. Install D1, 1N4937 fast recovery diode. Observe the correct polarity ! ...

  • Ramsey Electronics DN1 - page 14

    DN1 • 14  23. Select two of the 1uF e lectrolytic capacitors and solder the ground leads together.Install them as C3. Bend the ground leads away from U1.  24. Install C1, the remaining 1uF cap acitor. The positive side should be faci ng R5 .  25. Install the Benchmark BQ200 3 IC. Notice that one end of the chip is marked with a do t, not ...

  • Ramsey Electronics DN1 - page 15

    DN1 • 15 present, giving us an accurate representation of one cell contained in the pack.  33. Install R21, 47K ohm [yellow-violet-ora nge].  34. Install DIP switch S1 (D)ual (I)nline (P)ackage. Make sure that the switchable contacts face toward the ou tside of the circuit board, allow ing for easy chan ging of number of cells to charge. ? ...

  • Ramsey Electronics DN1 - page 16

    DN1 • 16 CONGRATULATIONS You have just co mpleted you r DN1 NiCa d batte ry conditione r unit. Tak e a well deserved break no w. Give your eyes a rest. W hen you return, be sure to check over your work on the entire circuit board. Energiz ing the circuit boa rd with solde r “bridges” or misplaced components can damage your kit. Don’t throw ...

  • Ramsey Electronics DN1 - page 17

    DN1 • 17 Fill in the chart with the ra tings imprinted on your ba tteries. This shoul d help you to determine the proper jumper settings DN1 FINAL A SSEMBL Y INST RUCTIONS Use scrap resistor leads to form the proper “jumper” w ires to configure your conditioner. Use the parts diagram to identify the proper holes for the ju mper wires CHARGING ...

  • Ramsey Electronics DN1 - page 18

    DN1 • 18 SETTING UP THE SWITCHES You’ll need to configure the ro w of DIP s w itches for y our battery pack now. Since the minimum number of cells is at least one, the conditioner is already set up for a single battery to begin w ith. Switch No. 10 is reserved for the discha rging current setup. W hen it is closed the Doctor is in low current d ...

  • Ramsey Electronics DN1 - page 19

    DN1 • 19 indicator. By changing the ON / OFF times this LED becomes a charging status indic ator! Us e the following chart f or an indica tion of what the doctor is telling you. POWER SUPPLY CONSIDERATIONS The power supply used for the Dr. NiCad can very greatly depen ding on ho w you set up your char ger to work. While y ou m ay be able to “ge ...

  • Ramsey Electronics DN1 - page 20

    DN1 • 20 begin the Fast Charging mode. The Benchmark IC will constantly moni tor the pack and tu rn off the fast charge w hen the c ells are charged just to f ull capacity. Once this is accomplished, it will periodic ally “top off” the cells wi th a high current burst, and allow a slig ht trick le charge to f low . Unfortunately , about the o ...

  • Ramsey Electronics DN1 - page 21

    DN1 • 21 handled by the doctor, but if you have seve ral pack s, be sure to rotate them (or maybe buy a few more Dr. NiCad Chargers). BATTERY REPAIR ?? !! Many times we have older ba tteries or packs that don’t seem to hold a charge at all, but they were so expe nsive that we couldn’t bear to toss them in the trash. W ell, your fruga lity (so ...

  • Ramsey Electronics DN1 - page 22

    DN1 • 22 Use a methodical, logica l troubleshooting technique. Most problems can b e solved using common sense. A volt-ohm meter and a clear head a re usually all that are needed to correct any problem. Please un derstand that it is nearly impossible to “troubleshoot” by phone; any s pecific questions should be documented and sent to us by ma ...

  • Ramsey Electronics DN1 - page 23

    DN1 • 23 The Ramsey Kit Warranty Please read carefully BEFORE calling or writing in about your kit. M ost problems can be solved without contacting the factory. Notice that thi s is not a "fine p rint" w arr a nty. We want y ou to unders tand your rights and ours too ! All Ramsey kits will w ork if assembled pro perly. The very fact tha ...

  • Ramsey Electronics DN1 - page 24

    DN1 • 24 DN1 Dr. NiCad BATTERY CONDITIONER Quick Referenc e Page Guide Introduction to the DN1 ...... .................. 4 How it works ............. ....................... ..... 6 Parts list ............... ..................... ........... 8 Schematic diagram ..... ........................ . 9 Parts Layout diagram ....................... .. 11 ...

Manufacturer Ramsey Electronics Category Battery Charger

Documents that we receive from a manufacturer of a Ramsey Electronics DN1 can be divided into several groups. They are, among others:
- Ramsey Electronics technical drawings
- DN1 manuals
- Ramsey Electronics product data sheets
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All of them are important, but the most important information from the point of view of use of the device are in the user manual Ramsey Electronics DN1.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Ramsey Electronics DN1, service manual, brief instructions and user manuals Ramsey Electronics DN1. Depending on your needs, you should look for the document you need. In our website you can view the most popular manual of the product Ramsey Electronics DN1.

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A complete manual for the device Ramsey Electronics DN1, how should it look like?
A manual, also referred to as a user manual, or simply "instructions" is a technical document designed to assist in the use Ramsey Electronics DN1 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Ramsey Electronics DN1.

A complete Ramsey Electronics manual, should contain several basic components. Some of them are less important, such as: cover / title page or copyright page. However, the remaining part should provide us with information that is important from the point of view of the user.

1. Preface and tips on how to use the manual Ramsey Electronics DN1 - At the beginning of each manual we should find clues about how to use the guidelines. It should include information about the location of the Contents of the Ramsey Electronics DN1, FAQ or common problems, i.e. places that are most often searched by users in each manual
2. Contents - index of all tips concerning the Ramsey Electronics DN1, that we can find in the current document
3. Tips how to use the basic functions of the device Ramsey Electronics DN1 - which should help us in our first steps of using Ramsey Electronics DN1
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Ramsey Electronics DN1
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Ramsey Electronics DN1 in a specific country, if it was not possible to solve the problem on our own.

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