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Manual Ramsey Electronics SHA1

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Summary
  • Ramsey Electronics SHA1 - page 1

    SHA1 • 1 STEREO HEADPHONE AMPLIFIER Ramsey Electronics Model No. SHA1 Need a way to listen to line leve l audio from a tape deck or CD player? Need a way of boosting up any lo w level signal to earphone level for top quality stereo listen in g? This kit has CD quality audio capabilities with super low distortion, a wide frequency spectrum, and a ...

  • Ramsey Electronics SHA1 - page 2

    SHA1 • 2 RA M SEY TRA NSMIT TER KIT S • FM100B Professional FM Stereo Transmitter • FM25B S ynthesized Stereo FM Transmi tter • MR6 Model Rocket Track ing Transmitter • TV6 Television Tr ansmitter RAMSE Y RECEI VER KI TS • FR1 FM Broa dcast Receiver • AR1 A i rcraft Band Recei ver • SR2 Shortwa v e Receiver • SC1 Shortwav e Conver ...

  • Ramsey Electronics SHA1 - page 3

    SHA1 • 3 STEREO HEADPHONE AMPLIFIER KIT Ramsey Publication No . MSHA1 Price $5.00 How does it work . ............ ....... 4 Assembly Strategy ................. 6 Parts List ........... .............. ....... 7 Parts Layout Diagram ............ 8 Part Values Diagram .............. 9 Schematic ........... ............ ....... 10 Assembly Steps .... ...

  • Ramsey Electronics SHA1 - page 4

    SHA1 • 4 What is it and how does it w ork? Let’s take a look at the schematic diagram, and we will follow through from input to output to get a general idea how this kit works, and why. W e will look onl y at the left channel circuitry starting at J1 since the right channel is ide ntical to the left. A line level audio signal is placed in J1. L ...

  • Ramsey Electronics SHA1 - page 5

    SHA1 • 5 C3 is another coupl in g capacitor, and it serves the same purpose as C1 at the start of the circuit. This prevents the DC portion of the signal on the output of U1 fr om being sent to the earphones. VR1, C15 and C16 supply the regulated DC voltage for the circuit. ...

  • Ramsey Electronics SHA1 - page 6

    SHA1 • 6 RAMSEY “LEARN-AS-YOU-BUILD” ASSEM BLY STRATEGY Be sure to read through all of t he steps, and check the bo xes as you go to be sure you didn't mi ss any important steps. Althoug h you may be in a hurry to see re sults, before you switch on the power check all wiring and capacito rs for proper or ientation. Al so check the board ...

  • Ramsey Electronics SHA1 - page 7

    SHA1 • 7 SHA1 PARTS LIST Semiconductors  2 LM386 Audio Amplifier ICs (U1,2)  1 1N4002 rectifier diode (Bla ck body with white stripe on one end) (D1)  1 7808 Voltage Regulator (U3) Resistors  2 4.7K ohm resistors (y ellow-violet-red) (R2,7)  2 2 ohm resistors (r ed-black-gold) (R4,8)  2 10K ohm potentiometers (R3,6) Capacitors ? ...

  • Ramsey Electronics SHA1 - page 8

    SHA1 • 8 PARTS LAYOUT DI A GR AM ...

  • Ramsey Electronics SHA1 - page 9

    SHA1 • 9 PA RT S VA LUE DIA GRA M ...

  • Ramsey Electronics SHA1 - page 10

    SHA1 • 10 ...

  • Ramsey Electronics SHA1 - page 11

    SHA1 • 11 ...

  • Ramsey Electronics SHA1 - page 12

    SHA1 • 12 AS S EM B L I NG T H E SH A1 H E AD P HO N E AMP L IF I E R S: Sort out all of your parts to begi n with, making sure you have all of the parts required. You can use old egg cartons to hold various parts to make them easie r to find. Make sure to mount parts on the correct side! You will want to use the parts layout diagram to assist yo ...

  • Ramsey Electronics SHA1 - page 13

    SHA1 • 13  11. Install U2, one of the LM38 6 audio po wer amplifier ICs. Check the orientation of this ch ip to make sure the dot o r notch representing pin one is in the same direction as shown in the parts diagram. Make su re all eight pi ns are through the board before soldering. Note t hat it is very easy to have a pin folded under the IC ...

  • Ramsey Electronics SHA1 - page 14

    SHA1 • 14 usually indicating the negative (-) terminal of the component. You will notice on the parts layout diagram that the hole for the positive terminal is denoted, not the negative one. You will want to install this component wi th the positive (+) lead in the same orientation as shown in th e parts layout diagram. If you do not install it c ...

  • Ramsey Electronics SHA1 - page 15

    SHA1 • 15  35. Install C16, 10uF electrolytic capacitor. W atch polarity!  36. Install U3, the 7808 voltage regulator. You will want to bend the center lead out and orient the pa rt so that the writing on the front of the part faces the ou tside of the board. Solder all three leads.  37. Install C15, the last 10uF electrolytic capacitor. ...

  • Ramsey Electronics SHA1 - page 16

    SHA1 • 16 TESTING THE SHA1 You will need the following equipment for this test.  Audio source such as signa l generator, C D player, or tape deck.  RCA jacks to feed audio to the SHA1  Good quality headphones.  A 9 volt battery or DC power supply Simply connect your SHA1 up as if you were going to use it.  1. Connect your signal so ...

  • Ramsey Electronics SHA1 - page 17

    SHA1 • 17 TROUBLESHOOTING TIPS PROBLEM: No sound out of any c hannel. SOLUTION: Use a DMM to check the power supply voltage, do you have a fresh batt ery? If everything is OK, check your assembly, especially your parts orientation (D1?). Also check your earphones for proper operati on as well as your sound source. PROBLEM: One channel is out , th ...

  • Ramsey Electronics SHA1 - page 18

    SHA1 • 18 ...

  • Ramsey Electronics SHA1 - page 19

    SHA1 • 19 The Ramsey K it Warranty Ple ase r ead ca refully BEFO RE callin g or wr iting i n abou t y our kit. Most pr oblem s can be solv ed without contac ting the fac tory. Notice that thi s is not a "fine prin t " warranty . We want you to u nderstan d your righ ts and ours too ! All Ramsey kits will work if assembl ed properly. The ...

  • Ramsey Electronics SHA1 - page 20

    SHA1 • 20 SHA1 STEREO HEADPHONE AMPLIFIER KIT Quick Reference Page Guide How does it work .......... ................. ... 4 Assembly Strategy .................. .......... 6 Parts L ist .................... ................. ...... 7 Parts Layout Diagram ................. ...... 8 Part Values Diagram ........ ................ 9 Schemati c ...... ...

Manufacturer Ramsey Electronics Category Stereo Amplifier

Documents that we receive from a manufacturer of a Ramsey Electronics SHA1 can be divided into several groups. They are, among others:
- Ramsey Electronics technical drawings
- SHA1 manuals
- Ramsey Electronics product data sheets
- information booklets
- or energy labels Ramsey Electronics SHA1
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 SHA1.

A group of documents referred to as user manuals is also divided into more specific types, such as: Installation manuals Ramsey Electronics SHA1, service manual, brief instructions and user manuals Ramsey Electronics SHA1. 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 SHA1.

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A complete manual for the device Ramsey Electronics SHA1, 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 SHA1 by users. Manuals are usually written by a technical writer, but in a language understandable to all users of Ramsey Electronics SHA1.

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 SHA1 - 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 SHA1, 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 SHA1, that we can find in the current document
3. Tips how to use the basic functions of the device Ramsey Electronics SHA1 - which should help us in our first steps of using Ramsey Electronics SHA1
4. Troubleshooting - systematic sequence of activities that will help us diagnose and subsequently solve the most important problems with Ramsey Electronics SHA1
5. FAQ - Frequently Asked Questions
6. Contact detailsInformation about where to look for contact to the manufacturer/service of Ramsey Electronics SHA1 in a specific country, if it was not possible to solve the problem on our own.

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