Silicon ChipBack Issues - July 1990 SILICON CHIP
  1. Outer Front Cover
  2. Contents
  3. Publisher's Letter: The story of electrical energy
  4. Vintage Radio: How to solve unusual problems by John Hill
  5. Review: AR950 100-Channel Scanner by Garry Cratt
  6. Project: Digital Sine/Square Wave Generator; Pt.1 by John Clarke
  7. Project: Alarm Keypad & Combination Lock by Greg Swain
  8. Project: Build An Elegant Electronic Die by Darren Yates
  9. Serviceman's Log: The dangers of a quick fix by The TV Serviceman
  10. Back Issues
  11. Feature: The Story Of Electrical Energy by Bryan Maher
  12. Feature: Waveform Generation Using A PC, Pt.4 by Steve Payor
  13. Feature: Computer Bits by Jennifer Bonnitcha
  14. Project: Low Cost Dual Power Supply by John Crichton
  15. Feature: Amateur Radio by Garry Cratt, VK2YBX
  16. Market Centre
  17. Advertising Index
  18. Subscriptions
  19. Outer Back Cover

This is only a preview of the July 1990 issue of Silicon Chip.

You can view 49 of the 104 pages in the full issue, including the advertisments.

For full access, purchase the issue for $10.00 or subscribe for access to the latest issues.

Items relevant to "Digital Sine/Square Wave Generator; Pt.1":
  • Digital Sine/Square Wave Generator PCB patterns [04108901/2] (Free)
  • Silicon Chip article scan, July 1990 - Digital Sine/Square Wave Generator; Pt.1 (AUD $10.00)
Articles in this series:
  • Digital Sine/Square Wave Generator; Pt.1 (July 1990)
  • Digital Sine/Square Wave Generator; Pt.2 (August 1990)
Articles in this series:
  • The Technology Letters, Pt.2 (January 1989)
  • The Story Of Electrical Energy (July 1990)
  • The Story Of Electrical Energy; Pt.2 (August 1990)
  • The Story Of Electrical Energy; Pt.3 (September 1990)
  • The Story Of Electrical Energy; Pt.4 (October 1990)
  • The Story Of Electrical Energy; Pt.5 (November 1990)
  • The Story Of Electrical Energy; Pt.6 (December 1990)
  • The Story Of Electrical Energy; Pt.7 (January 1991)
  • The Story Of Electrical Energy; Pt.8 (February 1991)
  • The Story Of Electrical Energy; Pt.9 (March 1991)
  • The Story Of Electrical Energy; Pt.10 (May 1991)
  • The Story Of Electrical Energy; Pt.11 (July 1991)
  • The Story Of Electrical Energy; Pt.12 (August 1991)
  • The Story Of Electrical Energy; Pt.13 (September 1991)
  • The Story Of Electrical Energy; Pt.14 (October 1991)
  • The Story Of Electrical Energy; Pt.15 (November 1991)
  • The Story Of Electrical Energy; Pt.16 (December 1991)
  • The Story Of Electrical Energy; Pt.17 (January 1992)
  • The Story Of Electrical Energy; Pt.18 (March 1992)
  • The Story Of Electrical Energy; Pt.19 (August 1992)
  • The Story of Electrical Energy; Pt.20 (September 1992)
  • The Story Of Electrical Energy; Pt.21 (November 1992)
  • The Story Of Electrical Energy; Pt.22 (January 1993)
  • The Story of Electrical Energy (April 1993)
  • The Story Of Electrical Energy; Pt.24 (May 1993)
  • The Story Of Electrical Energy; Pt.24 (June 1993)
Articles in this series:
  • Computer Bits (February 1990)
  • Computer Bits (March 1990)
  • Waveform Generation Using A PC, Pt.3 (May 1990)
  • Waveform Generation Using A PC, Pt.4 (July 1990)
Articles in this series:
  • Computer Bits (May 1990)
  • Computer Bits (June 1990)
  • Computer Bits (July 1990)
  • Computer Bits (August 1990)
  • Computer Bits (September 1990)
Articles in this series:
  • Amateur Radio (November 1987)
  • Amateur Radio (December 1987)
  • Amateur Radio (February 1988)
  • Amateur Radio (March 1988)
  • Amateur Radio (April 1988)
  • Amateur Radio (May 1988)
  • Amateur Radio (June 1988)
  • Amateur Radio (July 1988)
  • Amateur Radio (August 1988)
  • Amateur Radio (September 1988)
  • Amateur Radio (October 1988)
  • Amateur Radio (November 1988)
  • Amateur Radio (December 1988)
  • Amateur Radio (January 1989)
  • Amateur Radio (April 1989)
  • Amateur Radio (May 1989)
  • Amateur Radio (June 1989)
  • Amateur Radio (July 1989)
  • Amateur Radio (August 1989)
  • Amateur Radio (September 1989)
  • Amateur Radio (October 1989)
  • Amateur Radio (November 1989)
  • Amateur Radio (December 1989)
  • Amateur Radio (February 1990)
  • Amateur Radio (March 1990)
  • Amateur Radio (April 1990)
  • Amateur Radio (May 1990)
  • Amateur Radio (June 1990)
  • Amateur Radio (July 1990)
  • The "Tube" vs. The Microchip (August 1990)
  • Amateur Radio (September 1990)
  • Amateur Radio (October 1990)
  • Amateur Radio (November 1990)
  • Amateur Radio (December 1990)
  • Amateur Radio (January 1991)
  • Amateur Radio (February 1991)
  • Amateur Radio (March 1991)
  • Amateur Radio (April 1991)
  • Amateur Radio (May 1991)
  • Amateur Radio (June 1991)
  • Amateur Radio (July 1991)
  • Amateur Radio (August 1991)
  • Amateur Radio (September 1991)
  • Amateur Radio (October 1991)
  • Amateur Radio (November 1991)
  • Amateur Radio (January 1992)
  • Amateur Radio (February 1992)
  • Amateur Radio (March 1992)
  • Amateur Radio (July 1992)
  • Amateur Radio (August 1992)
  • Amateur Radio (September 1992)
  • Amateur Radio (October 1992)
  • Amateur Radio (November 1992)
  • Amateur Radio (January 1993)
  • Amateur Radio (March 1993)
  • Amateur Radio (May 1993)
  • Amateur Radio (June 1993)
  • Amateur Radio (July 1993)
  • Amateur Radio (August 1993)
  • Amateur Radio (September 1993)
  • Amateur Radio (October 1993)
  • Amateur Radio (December 1993)
  • Amateur Radio (February 1994)
  • Amateur Radio (March 1994)
  • Amateur Radio (May 1994)
  • Amateur Radio (June 1994)
  • Amateur Radio (September 1994)
  • Amateur Radio (December 1994)
  • Amateur Radio (January 1995)
  • CB Radio Can Now Transmit Data (March 2001)
  • What's On Offer In "Walkie Talkies" (March 2001)
  • Stressless Wireless (October 2004)
  • “Degen” Synthesised HF Communications Receiver (January 2007)
  • WiNRADiO: Marrying A Radio Receiver To A PC (January 2007)
  • PICAXE-08M 433MHz Data Transceiver (October 2008)
  • Half-Duplex With HopeRF’s HM-TR UHF Transceivers (April 2009)
  • Dorji 433MHz Wireless Data Modules (January 2012)
February 1988: 200 Watt Stereo Power Amplifier; Deluxe Car Burglar Alarm; End Of File Indicator For Modems; Low Ohms Adaptor For Multimeters; Line Isolation Unit For Phone Patch; Easy Tips On Headphone Repair. March 1988: Remote Switch For Car Alarms; Telephone Line Grabber; Endless Loop Tape Player; Build Your Own Light Box; New Life For RadioCassette Players; Old-Time Crystal Radio. April 1988: Walkaround Throttle For Model Railroads, Pt.1; pH Meter For Swimming Pools; Slave Flash Trigger; Headphone Amplifier For CD Players ; What Is Negative Feedback, Pt. 1 ; Mobile Antennas For The VHF & UHF Bands. May 1988: Optical Tachometer For Aeromodellers; High Energy Ignition · For Cars; Ultrasonic Car Burglar Alarm ; Walkaround Throttle For Model Railroads , Pt.2; Designing & Building RF Attenuators; Motorola MC3334P High Energy Ignition IC Data. June 1988: Stereo Control Preamplifier (Uses LM833), Pt.1; Breakerless Ignition For Cars Using Hall Effect Pickups; Mega-Fast Nicad Battery Charger; Automatic Light Controller Uses PIR Detector ; RF Sniffer Probe & Preamplifier; What Is Negative Feedback, Pt. 2. July 1988: Stereo Control Preamplifier, Pt.2 ; Fitting A Fuel Cut-Off Solenoid ; Booster For TV & FM Signals ; The Discolight Light Show, Pt.1; Tone Burst Source For Amplifier Headroom Testing; National Semiconductor LM833 Op Amp Data; What Is Negative Feedback, Pt.3. August 1988: Building A Plasma Display ; Universal Power Supply Board; Remote Chime/Doorbell; High Performance AC Millivoltmeter, Pt.1; Discolight Light Show , Pt. 2; Getting The Most Out Of Nicad Batteries; Data On Insulated Tab Triacs. September 1988: Hands-Free Speakerphone; Electronic Fish Bite Detector; High Performance AC Millivoltmeter, Pt.2; Vader Voice; Motorola MC34018 Speakerphone IC Data; National Semiconductor LM 1 2 1 50W Op Amp Data & Applications ; What Is Negative Feedback, Pt.4. October 1988: Stereo FM Transmitter (Uses Rohm BA 1 404); High Performance FM Antenna; Matchbox Crystal Set; Electronic House Number; Converting A CB Radio To The 28MHz Band; Electronics & Brock's BMW Blaster; Queensland 's Powerful Electric Locomotives. November 1988: 120W PA Amplifier Module (Uses Mosfets); Poor Man 's Plasma Display ; Automotive Night Safety Light; Adding A Headset To The Speakerphone; How To Quieten the Fan In Your Computer; Screws & Screwdrivers , What You Need To Know; Diesel Electric Locomotives . December 1988: 120W PA Amplifier (With Balanced Inputs), Pt.1; Diesel Sound Generator; Car Antenna/ Use this handy form to order your back copies ~ I I I - ---- ----- - --- - Please send me a back issue for: D May 1 988 LJ June 1 988 n - -- - - February 1 988 □ July 1 988 - - ----------- •--7 D March 1 988 o O September 1 988 April 1 988 I □ October 1 988 D November 1 988 D December 1 988 D August 1 988 D January 1 989 I I □ March 1 989 D April 1 989 D May 1 989 D June 1989 □ July 1989 O August 1989 D September 1989 0 October 1989 0 November 1989 D December 1 989 □ January 1990 D June 1990 D February 1 990 D April 1 990 □ May 1990 I I I I I I I I I I I I D March 1990 O February 1 989 Enclosed is my cheque /money order for $ _ _ _ _ _ _ or please debit my □ Bankcard D Visa Card ----,------r---. _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ D MasterCard Card No. I II ]I II Signature. _ _ _ _ _ _ _ _ _ _ _ _ Card expiry date_~-Name _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ (PLEASE PRINT) Stree.______________________ Suburb/town, _ _ _ _ _ _ _ _ _ _ _ _ Postcode____ Price: $A5.00 each (includes postage) . Overseas orders add $A 1 .00 per issue for postage NZ & PNG orders are sent by air mail. Detach and mail to: SILICON CHIP PUBLICATIONS PO BOX 139 COLLAROY BEACH NSW 2097 OR FAX: (02) 982 95 53 l I ~ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -J50 SILICON CHIP Demister Adaptor ; SSB Adaptor For Shortwave Receivers; Electronics & Holden's New V6 Engine ; Why Diesel Electrics Killed Off Steam; Index to Volume 1 . January 1989: Line Filter For Computers; Ultrasonic Proximity Detector For Cars; Simple Computer Sound Repeater; 120W PA Amplifier (With Balanced Inputs) Pt.1 ; How To Service Car Cassette Players; Massive Diesel Electrics In The USA. February 1989: Transistor Beta Tester; Minstrel 2-30 Loudspeaker System ; LED Flasher For Model Railways (uses LM3909) ; Build A Simple VHF FM Monitor (uses MC3362), Pt.1; Lightning & Electronic Appliances; Using Comparators to Detect & Measure. March 1989: LED Message Board , Pt.1 ; 32-Band Graphic Equaliser , Pt.1 ; Stereo Compressor For CD Players ; Map Reader For Trip Calculations ; Amateur VHF FM Monitor, Pt.2; Signetics NE572 Compandor IC Data; Electronics For Everyone - Resistors . April 1989: Auxiliary Brake Light Flasher; Electronics For Everyone: What You Need to Know About Capacitors ; Telephone Bell Monitor/ Transmitter; 32-Band Graphic Equaliser, Pt. 2; LED Message Board , Pt.2. May 1989: Electronic Pools/Lotto Selector; Synthesised Tom-Tom ; Biofeedback Monitor For Your PC ; Simple Stub Filter For Suppressing TV Interference; LED Message Board , Pt.3; Electronics for Everyone - All About Electrolytic Capacitors. June 1989: Touch-Lamp Dimmer (uses Siemens SLB0586) ; Passive Loop Antenna For AM Radios ; Universal Temperature Controller; Understanding CRO Probes; LED Message Board , Pt.3; Coherent CW - A New Low Power Transmission Technique. July 1989: Exhaust Gas Monitor (Uses TGS812 Gas Sensor) ; Extension For the Touch-Lamp Dimmer; Experimental Mains Hum Sniffers ; Compact Ultrasonic Car Alarm; NSW 86 Class Electrics ; Facts On the PhaxSwitch Sharing Your Phone Line With A Fax Machine. August 1989: Build A Baby Tower AT Computer; Studio Series 20-Band Stereo Equaliser, Pt.1; Garbage Reminder - A 7-day Programmable Timer; Introduction To Stepper Motors; GaAsFet Preamplifier For The 2-Metre Band; Modern 3-Phase Electric Locomotives . September 1989: 2-Chip Portable AM Stereo Radio (Uses MC13024 and TX7376P) Pt.1; Alarm-Triggered Telephone Dialler; High Or Low Fluid Level Detector (uses LM1830N); Simple DTMF Encoder (uses Texas TMC5089) ; Studio Series 20-Band Stereo Equaliser , Pt.2 ; Auto-Zero Module for Audio Amplifiers (Uses LMC669) ; A Guide fo Hard Disc Drives. October 1989: Introducing Remote Control; FM Radio Intercom For Motorbikes (Uses BA 1 404 And TDA7000) Pt.1 ; GaAsFet Preamplifier For Amateur TV ; 1 Mb Printer Buffer; 2-Chip Portable AM Stereo Radio , Pt.2 ; Installing A Hard Disc In The PC; A Look At Australian Monorails. Novem ber 1989: Radfax Decoder For Your PC (Displays Fax , RTTY and Morse) ; Super Sensitive FM Bug ; Build A Low Cost Analog Multimeter; FM Radio Intercom For Motorbikes, Pt.2; 2-Chip Portable AM Stereo Radio , Pt.3 ; Floppy Disc Drive Formats & Options; The Pilbara Iron Ore Railways . Decem ber 198 9: Digital Voice Board (Records Up To Four Separate Messages, Uses Texas TMS34 77NL and 256K RAMs); UHF Remote Switch ; Balanced Input & Output Stages; National Semiconductor LM831 Low Voltage Amplifier IC Data; Install A Clock Card In Your PC; Index to Volume 2. January 1990: Service Tips For Your VCR ; Speeding Up Your PC; Phone Patch For Radio Amateurs; High Quality Sine/Square Oscillator; Active Antenna Kit ; The Latest On High Definition TV; Speed Controller For Ceiling Fans. February 1990: 1 6-Channel Mixing Desk ; High Quality Audio Oscillator, Pt.2 ; The Incredible Hot Canaries ; Random Wire Antenna Tuner For 6 Metres; Phone Patch For Radio Amateurs, Pt.2; PC Program Calculates Great Circle Bearings. March 1990: 6/ 12V Charger For Sealed Lead-Acid Batteries; Delay Unit · For Automatic Antennas; Workout Timer For Aerobics Classes; 16-Channel Mixing Desk, Pt.2; Using The UC3906 SLA Battery Charger IC; Digital Waveform Generation Using a PC ; The Controls On A Model Aircraft. April 1990: Dual Tracking ± 50V Power Supply; VOX With Delayed Audio; Relative Field Strength Meter; 16-Channel Mixing Desk, Pt.3; Simple Service Tips For Your Microwave Oven ; Model Aircraft Aerodynamics; Active CW Filter For Weak Signal Reception. May 1990: Build A 4-Digit Capacitance Meter; High Energy Ignition For Cars With Reluctor Distributors ; The Mazzie CW Transceiver; Waveform Generation Using A PC, Pt.3 ; 16-Channel Mixing Desk, Pt.4 ; What To Do When Your Computer Goes Bung , Pt. 1; Electronic Load For Checking Power Supplies. June 1990: Multi-Sector Home Burglar Alarm; Low-Noise Universal Stereo Preamplifier; Load Protection Switch For Power Supplies; Fitting A Fax Card To Your Computer; Off-Shore Oil Rigs ; What To Do When Your Computer Goes Bung , Pt.2. Note: November 1987, December 1987 & January 1988 are now sold out. f ULY1990 51