Ramsey Electronics SHA1 Manual de Instruções

SHA1• 1 STEREO HEADPHONE AMPLIFIER Ramsey Electronics Model No. SHA1 Need a way to listen to line level audio from a tape deck or CD player? N

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SHA1 • 12 ASSEMBLING THE SHA1 HEADPHONE AMPLIFIERS: Sort out all of your parts to begin with, making sure you have all of the parts required. You ca

SHA1• 13  11. Install U2, one of the LM386 audio power amplifier ICs. Check the orientation of this chip to make sure the dot or notch representing

SHA1 • 14 usually indicating the negative (-) terminal of the component. You will notice on the parts layout diagram that the hole for the positive t

SHA1• 15  35. Install C16, 10uF electrolytic capacitor. Watch polarity!  36. Install U3, the 7808 voltage regulator. You will want to bend the cent

SHA1 • 16 TESTING THE SHA1 You will need the following equipment for this test.  Audio source such as signal generator, CD player, or tape deck. 

SHA1• 17 TROUBLESHOOTING TIPS PROBLEM: No sound out of any channel. SOLUTION: Use a DMM to check the power supply voltage, do you have a fresh bat

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SHA1• 19 The Ramsey Kit Warranty Please read carefully BEFORE calling or writing in about your kit. Most problems can be solved without contacting t

SHA1 • 2 RAMSEY TRANSMITTER KITS • FM100B Professional FM Stereo Transmitter • FM25B Synthesized Stereo FM Transmitter •

SHA1 • 20 SHA1 STEREO HEADPHONE AMPLIFIER KIT Quick Reference Page Guide How does it work ... 4 Assembly Strategy ...

SHA1• 3 STEREO HEADPHONE AMPLIFIER KIT Ramsey Publication No. MSHA1 Price $5.00 How does it work ... 4 Assembly Strategy ...

SHA1 • 4 What is it and how does it work? Let’s take a look at the schematic diagram, and we will follow through from input to output to get a gener

SHA1• 5 C3 is another coupling capacitor, and it serves the same purpose as C1 at the start of the circuit. This prevents the DC portion of the signa

SHA1 • 6 RAMSEY “LEARN-AS-YOU-BUILD” ASSEMBLY STRATEGY Be sure to read through all of the steps, and check the boxes as you go to be sure you didn&

SHA1• 7 SHA1 PARTS LIST Semiconductors  2 LM386 Audio Amplifier ICs (U1,2)  1 1N4002 rectifier diode (Black body with white stripe on one en

SHA1 • 8 PARTS LAYOUT DIAGRAM

SHA1• 9 PARTS VALUE DIAGRAM