Published:2009/7/20 22:21:00 Author:Jessie
Used in transistorized color tv. R-Y demodulators are identical except for having different demodulation phase angle. –D. Bray, Solid State Makes Debue in Big-Screen Color Tv Electronics, 39:8, p 99-105. (View)
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Published:2009/7/20 22:44:00 Author:Jessie
10-channel scanning logic for PF scanner/monitor receiver (courtesy Motorola Semiconductor Products Inc.). (View)
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Published:2009/7/20 22:40:00 Author:Jessie
Combination of Fairchild μA795 multiplier and μA741 opamp generates AC error signal for driving two-phase servo-motor. Phase-shifted signal from R1-C1 is applied to input pin 4 of multiplier, DC signal input is applied to pin 9, and servo position signal goes to pin 12. Multiplier takes difference between signals on 9 and 12, multiplies this by signal on pin 4, and feeds resulting sine wave from pin 14 to opamp for amplification and transfer to servo driver. When servomotor action makes voltages on 9 and 12 equal, system is nulled.-Fairchild Linear IC Contest Winners, EEE Magazine, Jan. 1971, p 48-49. (View)
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Published:2009/7/20 22:40:00 Author:Jessie
27 MHz to 10.7 MHz mixerfor CB operation using a TIS148 dual-gate MOSFET(courtesy Texas Instruments Incorporated). (View)
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Published:2009/7/20 22:36:00 Author:Jessie
5-digit incandescent display (courtesy Motorola Semiconductor Products Inc.). (View)
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Published:2009/7/20 22:35:00 Author:Jessie
900 MHz BF amplifier using a 3N225 dual-gate MOSFET. Coils L1 and L2 consist of the leads of the 1 pF and 3 pF capacitors (courtesy Texas Instruments Incorporated). (View)
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Published:2009/7/20 23:05:00 Author:Jessie
Circuit uses 791 power opamp in inverting configuration with gain of 10 for driving size 8 12-VDC servomotor in either direction. Article tells how to calculate heatsink requirements for opamp.-R. J. Apfel, Power Op Amps-Their Innovative Circuits and Pack-aging Provide Designers with More Options, EDN Magazine, Sept. 5, 1977, p 141-144, (View)
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Published:2009/7/20 22:59:00 Author:Jessie
16.3 MHz oscillator for low-side injection in CB operation using a TIS148 dualgate MOSFET(courtesy Texas Instruments Incorporated).
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Published:2009/7/20 22:58:00 Author:Jessie
105 MHz to 10.7 MHz mixer (courtesy Texas Instruments Incorporated). (View)
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Published:2009/7/20 22:56:00 Author:Jessie
105 MHz PF amplifier using a 3N204 dual-gate MOSFET (courtesy Texas Instruments Incornorated). (View)
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Published:2009/7/20 23:27:00 Author:Jessie
12.5 MHz IF amplifier using a 3N225 dual-gate MOSFET(courtesy Texas Instluments Incorporated). (View)
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Published:2009/7/20 23:25:00 Author:Jessie
27 MHz autodyne tuner using a 3N204 dual-gate MOSFET (courtesy Texas Instruments Incorporated). (View)
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Published:2009/7/20 23:22:00 Author:Jessie
45 MHz/58 MHz BF ampllfier with tuned input.See listing for component values(courtesy GTE Sylvania Incorporated). (View)
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Published:2009/7/20 23:19:00 Author:Jessie
FM wireless microphone using and ECG1014 and ECG1017. Circuit works well up to 250 to 300 feet. For maximum stability cement coil forms to chassis or board. Recommended supply voltage is 4.5 volts using three cells (courtesy GTE Sylvania Incorporated). (View)
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Published:2009/7/21 1:44:00 Author:Jessie
Mltiplier with op amp level shift (courtesy Motorola Semiconductor Products Inc.). (View)
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Published:2009/7/21 1:37:00 Author:Jessie
Arc tangent function from the 4301 multifunction chip (courtesy Burr-Brown Research Corporation). (View)
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Published:2009/7/21 1:36:00 Author:Jessie
Sine function from the 4301 multifunction chip (courtesy Burr-Brown Research Corporation). (View)
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Published:2009/7/21 1:35:00 Author:Jessie
Square rooter circuit using the 435 multiplier/divider chip (courtesy Analog Devices, Inc.). (View)
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Published:2009/7/21 1:34:00 Author:Jessie
Divider circuit with digitally controlled gain (courtesy Analog Devices, Inc.). (View)
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Published:2009/7/20 23:56:00 Author:Jessie
Output varies linearly with input over signal range of 0 to 4.5 V. Undesired sideband is suppressed 26 db at balance.-A. C. Todd, R P. Schuck, and H. M. Sachs, Using Voltage-Variable Capacitors in Modulator Design, Electronics, 34:3, p 56-59. (View)
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