Ramsey Electronics FM10A Manuel d'instructions

STC1• 1 Ramsey Electronics Model No. STC1 Now you can give your home stereo transmitter all of the features found in a professional radio st

STC1• 10 CONSTRUCTION OF THE STEREO TRANSMITTER COMPANION Sort out all of your parts to begin with, making sure you have all of the parts required.

STC1• 11 diodes in the kit. Since the appearance of this part is likely to change as we order these parts in the factory, this is how we will need to

STC1• 12 ❒ 28. Install R25, a 10K ohm resistor (brown-black-orange). ❒ 29. Install R26, a 10K ohm resistor (brown-black-orange). ❒ 30. Install R30, a

STC1• 13 ❒ 41. Install C6, a .001uF ceramic capacitor (Marked .001 or 102). ❒ 42. Install X1, the 6.00MHz crystal (Metal can marked 6.000). ❒ 43. Ins

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STC1• 16 ❒ 58. Install C31, a .022uF ceramic capacitor (marked .022 or 223). ❒ 59. Install R8, a 3.3K ohm resistor (orange-orange-red). ❒ 60. Install

STC1• 17 ❒ 73. Install C13, a 10uF electrolytic capacitor. Again note proper orientation. ❒ 74. Install R18, a 2.2K ohm resistor (red-red-red). ❒ 75.

STC1• 18 ❒ 95. Install R62, a 4.7M ohm resistor (yellow-violet-green). Guess what? we have just completed the limiter circuitry and the peak hold de

STC1• 19 ❒ 117. Install C40, a 10uF electrolytic capacitor. Again check polarity. ❒ 118. Install R41, a 10K ohm resistor (brown-black-orange). Well,

STC1• 2 RAMSEY TRANSMITTER KITS • FM10A, FM25B FM Stereo Transmitters • TV6 Television Transmitter • FM100B Super Pro FM

STC1• 20 Wow! we are finally finished installing parts into the board. You may of noticed that you have two LEDs left over. This is where you get to

STC1• 21 SETUP AND TESTING: You can test your STC1 by simply hooking it up and trying it or by using test equipment. For a test with testing equipm

STC1• 22 USING THE STC1: The STC1 is simply a sound processor. It is installed in series to process the audio right before it goes to the transmitte

STC1• 23 EXAMPLE HOOKUP

STC1• 24 PARTS LAYOUT DIAGRAM

STC1• 25 PARTS VALUE DIAGRAM

STC1• 26 TROUBLESHOOTING TIPS PROBLEM: No 1.5MHz oscillator signal. SOLUTION: First check your testing procedures to make sure your scope is on th

STC1• 27 The Ramsey Kit Warranty Please read carefully BEFORE calling or writing in about your kit. Most problems can be solved without contacting th

STC1• 28 STC1 Stereo Transmitter Companion Quick Reference Page Guide Introduction ... ...4 How Does It Work? ...

STC1• 3 STC1 STEREO TRANSMITTER COMPANION Ramsey Publication No. STC1 Price $5.00 TABLE OF CONTENTS Introduction ...

STC1• 4 INTRODUCTION TO THE STEREO TRANSMITTER COMPANION Knowing how troublesome different audio sources can be when trying to transmit them over th

STC1• 5 HOW DOES IT WORK? To help you understand where we are in the circuit you will want to look at the circuit diagram in the center of the manua

STC1• 6 When this voltage on pin 5 of U2:B goes higher than 5 volts of the supply on pin 6 of U2:B, the output of U2:B goes high, thus lighting the L

STC1• 7 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&a

STC1• 8 RAMSEY STC1 PARTS LIST Semiconductors ❒ 2 LF347 Quad Op-Amps (U1,2) ❒ 1 74HC74 Dual type ‘D’ flip-flops (U6) ❒ 2 MAX291 8th order Butt

STC1• 9 Capacitors ❒ 5 100pF ceramic capacitors (marked 100, or 101) (C1,9,18,27,45) ❒ 1 470pF ceramic capacitor (marked 470 or 471) (C46) ❒ 4