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Summary of Contents for 550603

Page 1: ...Sine Square Oscillator 550603 QUARE OSCILLATOR OUTPUT Vpk pk POWER 0 l r ru I l TTL only SYNC OUT 9 rv 1 s 11111 11 FEEDBACK www g0rsq co uk...

Page 2: ...Section 2 Operation Section 3 Circuit Description Section 4 Maintenance E FEEDBACK INSTRUMENTS LIMITED CROWBOROUGH SUSSEX ENGLAND Telephone Crowborough 08926 3322 Cables Feedback Crowbr Telex 95255 M...

Page 3: ...smitted in any form or by any means electronic mechanical photocopying recording or otherwise without the prior perm ssion of Feedback Instruments Limited 2 The Health and Safety at Work Act 1974 We a...

Page 4: ...y switching the requisite resistors Sine Square Oscillator SS0603 SECTION 1 A thermistor is used to control the amplitude of oscillation A current input Schmitt trigger is used to produce a square wav...

Page 5: ...side TTL The case provides the main structural strength of the A separate sinewave sync output is continuously instrument Removal of the case gives access to all available for oscilloscope synchronisa...

Page 6: ...ction Four black push buttons Amplitude Single rotary control Output terminals Main output from pair of Red and Black 4mm socket binding posts TTL Output Separate 4mm socket Sync out 4mm socket Sine S...

Page 7: ...on less than 05 at 1kHz Square wave rise and fall times less than 100ns Auxiliary Outputs TTL compatible square wave Available only when appropriate pushbutton is depressed Amplitude 3 5 to 4 5V in th...

Page 8: ...volts Wire connections The colour code of the power supply cable is Brown Live Blue Neutral Green Yellow Ground Sine Square Oscillator SS0603 SECTION 2 The ground wire is connected to the front and re...

Page 9: ...cidental damage that might ensue should an overvoltage be applied and the wrong waveform pushbutton depressed The output ampl itude is fixed and is 5 volt TTL compatible The output impedance is low wh...

Page 10: ...illation The phase and gain relationship of the network RCR C is very similar to that of the active side of the well known Wien Bridge 1 The resonant frequency is f where R R 27TRC and C C vc 7 VR Fig...

Page 11: ...about 1 3 When the of equilibrium is reached where the thermistor resistance thermistor R2 is cold the ratio is much greater than 3 and is just three times that of resistor network RA so the amplitude...

Page 12: ...in 3 4 b Vcc TR18 point B square wO ve out TR13 point A sine current input point A Sine Square Oscillator 550603 When the sinewave is selected resistor R42 is shunted by resistor R34 so that switching...

Page 13: ...ursion abruptly at positive and negative limits suitable for 5 volt TTL For all other output options the output current is connected to the slider of the linear output potentiometer which is shunted t...

Page 14: ...le while pulling outwards as shown in fig 4 2 to avoid scratching the case I U 0 Fig 4 1 5ine Quare Oscillator 550603 SECTION 4 Fig 4 2 The top and bottom halves of the cover can then be Iifted off Th...

Page 15: ...bring the square wave symmetrical about 0 volts 2 Select sine waveform from the main output and adjust potentiometer R36 so that the sine wave is also symmetrical about 0 volts and adjust poten tiome...

Page 16: ...ly Test point Check power supply Check fuse ve line ve line Across D1 Across C7 Across R45 ve supply current Across R46 ve supply current Correct output at Test Point Voltage in range 100 125Vor 200 2...

Page 17: ...ponents is listed together with a look up table Component Resistors Spec Component Spec Component Spec Component Capacitors Spec R1 A R16 B R31 A C1 Q R2 Thermistor R17 B R32 E C2 P R3 A R18 B R33 A C...

Page 18: ...on Rllto22 frequency switch E Preset carbon O lW or more 20 or less See fig 4 3 R27 R32 R36 R41 or Cermet pots H Potentiometer hW 10 15 16 diam R43 wirewound 1 shaft lkD 5 8 FMF K Capacitor 100V 2 h...

Page 19: ...No Manufacturer T R 9 1 J 4 2 Si Iicon ix R2 RA54 STC Other components including mains transformer and switches are supplied to Feedback specifications and should be ordered through Feedback Instrumen...

Page 20: ...r rr r R4S z b c lO d I R6 _ T 11 lDT 00 108 Rf 49 ITJ r f TR8 J TR18 R40 g TR1 R13 Cl e qD 00 r l 1 tJ ffi R34 R38 OD U R41 Id i 42 h ZI fl Jb r l R24J J rRf7 liJ TR JR36 TIl15 TR 19 I 0IIJ 52 q 53 J...

Page 21: ...9 trl H RH n U lKO L _ J_ _ J _ J _ _ _ _ __ _ _ _ _ l l s _ All MPH llX 108e EXCEPT WHERE OTHERWISE SHIED ALL RESiSTORS oS I lILW 1I1llESS STATED H Jt T V N T I l L l fjF lIUlllCK l1xmcKQF F F T r l...

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