12V Lead Acid Battery Charger with Automatic utout.pdf
24 Line I-O Card for ISA Bus Computers.pdf
25W Amplifier Errata SC 1993-12.jpg
3.5 Digit DVM.jpg
48V Charger for Sealed Lead Acid Batteries.jpg
4DoF Gamers Seat Notes SC 2019-09.pdf
50-FET-Projects.pdf
50-watt Stereo Amplifier Module Errata SC 195-02.jpg
50Hz Variable Q Notch Filter.jpg
50W per Channel Stereo Power Amplifier Part 2 SC 1995.04.pdf
5KW DC Motor Speed Controller.pdf
About Potentiometers, Capacitors and Switches.pdf
Active Notch Filter.jpg
ADC Supports Up to 256 Ipouts.pdf
AF Oscillsator Prod.pdf
Aligning Vintage AM Tuners.pdf
AM Radio Transmitter.pdf
Amateur Radio Glossary Supplement.pdf
Amplifier Q&A Mainly for Beginners 1974.pdf
Amplifiers - Requirements & Specifications.pdf
An 8 Channel Decoder for Remote Control.pdf
An Effective Frequency Rejection Circuit.pdf
An Experimenter's Aviation Band Receiver Errata ME 1986-09.jpg
An Introduction to Fault Finding Part 7 of 7 PW 1971-12.pdf
Analog Signal Conditioning for Accurate Measurements.mht
Analog Switch Acts as DC-DC Converter.pdf
Archtiectural Acoustics.pdf
Arduino Based Colour Code Generator.pdf
Arduino Based Programmable Digital Data Display.pdf
Arduino Mega Box Music Player Errata SC 2018-02.jpg
Assorted FET RF Circuits.pdf
Assorted Oscillators and Generators.pdf
Astor OZ Mickey Mouse Radio.pdf
Audio Facilities - Planning, Construction and Servicing.pdf
Audio Specifications - What, How, Conditions and Correct Nomenclature.pdf
Audio Test Oscillator.pdf
Audio Test Oscillstor.jpg
Audio-Hi-Fi-Handbook-Vol-1-1974.pdf
Auto Electronics Errats EA 1996-10.jpg
Automatic vs Manual Turntables.pdf
Automotive APplications of Power Semiconductors.pdf
Balanced Mic Pre with 2 Ch line level mixer.pdf
Bandpass Active Filter.jpg
Basic Old School Lab Power Supply.pdf
Basic Op-Amp Building Blocks.jpg
Basic Transistor and Tube Theory.pdf
Bass & Treble Tone Controls - Phase Inverting.jpg
Batteries for Solid State Equipment.pdf
Battery Charger Current Control.jpg
BCD-to-seven segment rriver for LCD.jpg
Beginners Start Here Part 22 Oscillators-Modulators PrE 1966-08.pdf
Build an FM Radio Trainer Part 1 SC 1994-04.pdf
Build an old school  recording studio in your garage - 1978.pdf
Building A Complete Control System for Models Part 3 SC 1995-03.pdf
Buying Watts & Other Things 1974.pdf
Buzzer for an Infrared Security Light.jpg
Cadmium Suphiide Photocall Applications.pdf
Calibration and Repair for Bird Wattmeter Elements.pdf
Capacitance Bridge.pdf
CASS-RS232  Adapter Errata ME 1986-12.jpg
Circuit Multiplexes Automotive Sensors.jpg
Classes of Amplification.pdf
Clearing PCB holes of Solder with a Pencil Point.pdf
Commonly Used IC Pinouts.jpg
Comprehensive Security System.pdf
Continuity and LED Tester.jpg
Control Projcts by hours, not dollars.pdf
Crosstalk Talk - 1958.pdf
Crystal Filter with Variable Selectivity.pdf
Debouncing Using Flip-Flops.jpg
Debouncing Using Schmitt Triggers.jpg
Determining Contact Material in Surplus BPO Relays.jpg
Digital 8 Bit Noise Source.jpg
Digital Effects Unit Errata SC 1995-02.jpg
Digital Frequency Counter-Timer Part 4 PW 1971-12.pdf
Digital Multi Train Controller Remote Control.pdf
Door Chime Disabler.jpg
Dual Integrator Oscillator.jpg
Dual Votage to Power SIM Card.pdf
Easy-to-Build Antenna for 146 - 440 MHz.pdf
Electronics in the Automobile Part 2 SC 1995-04.pdf
Equalization in the Home.pdf
Equalization of Sound Reinforcement Systems.pdf
everyday_with_practical_electronics-1995_09.pdf
Exploring CMOS Part 2 EA 1996-11.pdf
Exponential Current Sink.jpg
Exponential Current Source.jpg
Fault Finding - There;s Always Something Different.pdf
FET Audio Switch.jpg
FET Operation.pdf
FET Sample and Hold.jpg
FET Timer.pdf
Formulas to simplify classis V-I converter.jpg
Fourth Order Elliptic Low Pass Filter.jpg
Function Generator.jpg
Fuse Failure Indicaton.jpg
Graphic Equaliser Noise and Distortion SC 1898-03-04.jpg
Graphic Equaliser.jpg
Guitar Fuzz Unit.jpg
Headlight Warning for Classic Cars.jpg
Hearing, the Determining Factor in High-Fidelity Transmision Part 3 of 3 Audio 1958-09.pdf
Heavy Duty DC Motor Control.jpg
High Impedance Voltmeters.pdf
High Isolation Current Adaptor - Part still availabble as of 2025.pdf
High Pass - Low Cut Active Filters.jpg
High Pass - Rumble Filter.jpg
High Reliability Power Transistors.pdf
High-Power DC Fan Speed Controller Errata SC 2018-01.jpg
High-Quality Low-Voltage Audio.pdf
History of Electronics - 1930s Avionica.pdf
Home Made Parabolic Microphjone.pdf
Home Security System.pdf
How to connect an Apple II computer to a PC RGB monitor cheaply.pdf
How to evaluate FM stereo tuner performance.pdf
How Vibrators Work and Ground Symbols Notes SC 2019-11.pdf
Hybrid Feednacks For Power Amplifiers by Herbert I. Keroes.pdf
IMP Loudspeaker Testing System Errata EA 1994-08.jpg
Improve Fast Logic Designs with Terminated Lines.pdf
Increasing Regulator Currents.jpg
Increasing Regulator Voltages.jpg
Inexpensive Wireless Induction Headphones.pdf
Intergated Transistor 25W Amplifier with Germanium Transistors Part 1 PrE 1964-12.pdf
Intermittent Conn Organ Troubleshooting.pdf
Intermodulation Distortion - A powerful tool for analyzing audio amplifiers.pdf
Inverting Peak Voltage Detector.jpg
IR Illuminator.pdf
Joy Drone.pdf
Lathe-e-Boy Errata SC 2018-01.jpg
LED Flashers that operate on 1.5V
LED Peak Program Meter.jpg
Light Sensitive Switch.pdf
Linear VCO-Function Generator.jpg
Linear VCO.jpg
Listener Preference Tests.jpg
Log and Antilog Converters.jpg
Logarithmic 8 Bit ADC.jpg
Logic gates form high-impedance voltmeter.pdf
Low Cost 4 Channel Amplifier.pdf
Low Cost Ultrasonic Radar.pdf
Low Current - Precision Power Supply.jpg
Low Current 555 Oscillator.jpg
Low Dissipation Regulator.jpg
Low Impedance Source Preamp.jpg
Low Pass - High Cut Active Filters.jpg
Low Range Ohmmeter Adaptor.pdf
Make Linear Pots Almost Log Taper.pdf
Making PCBs from Photocopies.jpg
Matinee Organ Update MA 1982.pdf
Measurement of Amplifier Internal Impedance.pdf
Metal Detector.pdf
Microphone Switching in Mixer Channel Strips.pdf
Minimize Noise in Power Supply Measurements.pdf
Miracle AM Antenna.pdf
Modulator to play any modern TV Signal on Vintage Australian TVs - NOT for North America.pdf
Moisture Detector.pdf
Morse Practice Oscillator.pdf
Mower Battery Voltage Control.pdf
Multi-Channel Remote Control Errata SC 1994-05.jpg
Navigating The Complicated And Frustrating World Of Audio Standards.pdf
Ni-Cd Recycler Errata ME 1986-10.jpg
Noise Gate-Expander.jpg
Nucleonics For The Beginner Part 6 PrE 1968-04 Strace Gamma Ray Spectrometer Unit.pdf
Omnidirectional Radiation.pdf
Op-Amp Provides Biasing in RF Amp.pdf
Oscilloscope Beam Switching Unit Part 1 PrE 1966-08.pdf
Output Transformers.jpg
Parametric Equalizer.jpg
Passive circuit limits inrush current.pdf
Passive Stereo Remote Control.pdf
PC Based 32 CH Logic Analyzer Part 2 of 2 EA 1996 - For education only - Some parts may not be available.pdf
PEAC Analogue Computer Part 1 PrE 1968-04.pdf
Philips 148C Radio from 1953.pdf
Photographic Timer for Darkrooms.pdf
Portable Crystal Tester.pdf
Positive Feedback for AF Curve Shaping Part 1 Audio 1951-02.pdf
Power Transistor Terms & Symbols.pdf
Powerful Crystal Radio.pdf
Preamplifier for Digital Speedo Notes SC 1994-07.jpg
Precision full wave Rectifier Circuit Diagram.png
Precision Full Wave Rectifier.jpg
Precision Power Supplies.jpg
Precision VCO.jpg
Preventing False Retriggerring.pdf
Probing system lets you test digital ICs.pdf
Product Detector for SSB and CW.pdf
Program for plotting amplifier Loadlines in BASIC.pdf
Projects for Radio Control Modellers Part 1 EA 1994-10.pdf
Protecting Op Amps from Overloads.pdf
Pseudo Phaser.jpg
Radiation-Hardened Power Transistors.pdf
Radio Controlled Doorbell.pdf
Rapid Crystal Checker.jpg
Restoring an old drive in theatre.pdf
RF Signal Generator usinf FETs.pdf
SC200 Amplifier Errata SC 2017-01-03.jpg
SC200 Amplifier Notes in SC 2018-03.pdf
Scanning Signal Generator Notes SC 2019-06-07.jpg
Schmitt Trigger Oscillators with Opamp or TTL inverter.jpg
Schmitt Triggers.jpg
Science And Subjectivism In Audio WW 1988-07.PDF
Scratch and Hiss Filter.jpg
Select-a-call add on for CB-Ham transceivers ETI 723.pdf
Semiconductor Basics Part 5 Light Sensitive Devices. PrE 1968-04.pdf
Sensitive Moisture Detector.pdf
Short History of Packaged Power Supplies.pdf
Signal Frequency SSB-CW Signal Resolver.pdf
Signal Tracer Using FET.pdf
Silicon Chip Errata 2018-03.jpg
Silicon_Chip_Magazine_2019_06_text.pdf
Simple CW Filter.pdf
Simple Mixer.jpg
Simple Theremin.pdf
Simplified Control Unit.pdf
Single Rail to Dual Rail for Op Amps.jpg
Six Bit DAC with 10 Bir Precision.jpg
Slew Limiter.jpg
Slingshot 2M Antenna for cheap..pdf
Solar Battery Charger.jpg
Solar Tracker Notes SC 1995-01.jpg
Solving Hypothesis Testing Problems.pdf
Sound Bender ETI 492.pdf
Sound Effects - Wind & Rain.pdf
Sound Reindorcement - System Considerations.pdf
Sound Reproducing Systems.pdf
Staircase Generator.jpg
Standard 8 Bit DAC.jpg
State Variable Filters.jpg
Stepper Motors.pdf
Stereophonic Recording and Playback Amplifier.pdf
Successful Monoing Of Your Low End.pdf
Sweep Generator.jpg
Switching 240V Relays.jpg
Tachometer Pickup For Diesel Engines.jpg
Temperature Based Fan speed control and Monitoring Using Arduino.pdf
Temperature Compensated Charger.jpg
Temperature Controller for Home Brewers.jpg
Terminal Impedance of an Attenuator Part 2 Audio 1951-02.pdf
The Commercial Sound.pdf
The Cutting Lathe Part 1 db 1968-03.pdf
THE EVOLUTION OP POUR-CRANNEL EQUIPMENT.pdf
The Foolproof Way to Sequencer Design.pdf
The Loudspeaker as a Spherical Sound Source.pdf
The Stereo Phasing Problem.pdf
The trials and tribulations of the novice kit builder.pdf
The Unusual Wunderlich Valve.pdf
Theory & Practice - Insertion Gain.pdf
Three Discrete Component Amplifiers and One Oscillator - 2N4401 Transistor should ne OK.pdf
Touchscreen Altimeter and Westher Station Errata SC 2017-12.jpg
Trackability.pdf
Transistor Circuit Design With the Math Vol 1.pdf
Transmitter senses triple relative-humidity figures.pdf
Triangle to Sine Wave Converter.jpg
Triangle-Square Wave Oscillator.jpg
True RMS Measurement.jpg
True RMS Mwasurement.pdf
Tunable Marker.pdf
Tuner Specifications Issues.pdf
Two Octave Miniature Organ Part 2 PW 1971-12.pdf
Two to One Compressor and Expander.jpg
Ultrasonic Power Sources.pdf
Universal Phase Locked Loop - Requires a part that may be difficult to find.pdf
Use a photo-electric-FET Optocoupleras a linear voltage-controlled potentiometer.pdf
Valve Pre-Amp for Audiophiles Part 1 EA 1994-10.pdf
Variable High Tension Cutout.pdf
Variable Length Tone Burst Generator.jpg
Versatile 40V-3A Lab Power Supply Part 1 EA 1993-12.pdf
Voice Operated Relay Notes SC 1994-09.jpg
Voltage to Current Converters.jpg
Webcan View Illuminator.pdf
What's Watts.pdf
Wide Range Audio Generator.pdf
Wide Range Electrostatic loudspeakers Part3 SC 1995-04.pdf
Wide Range Electrostatic Speakers Part 2 SC 1995-03.pdf
Wideband Noise Source Errata EA 1994-08.jpg
Wien Bridge Oscillator.jpg
Working With Op-Amps Part 2 Maplin 1982-06.pdf