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Practical Electronics Practical Electronics Practical Electronics Practical Electronics Practical Electronics The UK’s premier electronics, computing and maker magazine The UK’s premier electronics, computing and maker magazine The UK’s premier electronics, computing and maker magazine The UK’s premier electronics, computing and maker magazine The UK’s premier electronics, computing and maker magazine Circuit Surgery Implementing digital sinc low-pass filters The History of Electronics Part two covers inventors born between 1804 and 1847 Precision Electronics Choosing and using highly accurate op amps 01202 087631 Circuit Surgery Digital signal processing with windowed sinc filters Audio Out Getting the best out of capacitors for HiFi Precision Electronics Using difference and instrumentation amplifiers Circuit Surgery LTspice symbols and filter impulse responses Audio Out Getting the best out of capacitors for HiFi, pt2 Circuit Surgery Precision Electronics Digital high-pass, bandpass & band-stop filters Analog signal switching techniques and tips Audio Out Precision Electronics An amplifier that switches between Class-B and Class-A Protecting devices from damaging voltages Quantifying and dealing with noise Circuit Surgery Implementing DSP with a microcontroller Audio Out Cascoding JFETs and BJTs in a direct injection box Precision Electronics Bringing analog and digital together: ADCs & DACs Dual Hybrid (switch-mode + linear) Bench Supply DIY USB-C serial adaptor ESR Test Tweezers Measure capacitor equivalent series resistance Switching mains-powered devices on and off Transmitting sound in sequence using a laser beam Model Railway Points Controller Compact Reference Frequency Divider PLUS! Techno Talk – could an AI help to keep you company? Cool Beans – using NeoPixels for a colour matrix display Net Work – wireless weather stations and nuclear power www.electronpublishing.com A quiet domestic Fan Speed Controller The Pico Gamer: A DIY handheld games console with a 3D-printed case <at>practicalelec Feb 2025 £5.99 02 9 772632 573030 practicalelectronics PLUS! Techno Talk – AI-enabled holograms Cool Beans – building a 14 × 10 tricolour LED array Net Work – the UK’s first vertical orbital rocket launch site www.electronpublishing.com <at>practicalelec Mar 2025 £5.99 03 9 772632 573030 practicalelectronics PLUS! Calibrating MEMS Microphones Techno Talk – creating holographic clones of people Cool Beans – full power to the NeoPixel display array Net Work – the evolution of the Internet over 30 years www.electronpublishing.com <at>practicalelec Apr 2025 £5.99 04 9 772632 573030 practicalelectronics PLUS! Two kinds of Mini LED Dice Skill Tester 9000 A new take on an old game Techno Talk – the latest electronics technology Cool Beans – creating & optimising display algorithms Sinclair Calculators – 1970s innovation in the UK Adding solar charging to a Renault Kangoo electric van www.electronpublishing.com The Styloclone A simple electronic musical instrument <at>practicalelec PLUS! May 2025 £5.99 05 9 772632 573030 practicalelectronics Techno Talk – Humanoid robots may be a reality soon Cool Beans – shift registers and LED bargraphs The History of Electronics – our final instalment www.electronpublishing.com <at>practicalelec Jun 2025 £5.99 06 9 772632 573030 practicalelectronics Take out a one-year subscription and save more than £10 over the year. Even better – save over £1 per issue if you subscribe for two years – a total saving of £26. 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We accept MasterCard or Visa. (For past issues see the Back Issues page.) SUBSCRIPTION ORDER FORM  6 Months:.UK £33.99, Europe £38.99 (Airmail), Rest of the World £46.99 (Airmail)  1 Year: UK £59.99, Europe £69.99 (Airmail), Rest of the World £84.99 (Airmail)  2 Years: UK £114.99, Europe £129.99 (Airmail), Rest of the World £164.99 (Airmail) To: Practical Electronics Subscriptions PO Box 6337 Bournemouth BH1 9EH United Kingdom Tel: 01202 087631 Email: pesubs<at>selectps.com I enclose payment of £ .............. (cheque/PO in £ sterling only) payable to Select Publisher Services Ltd  Please charge my Visa/Mastercard My card number is: ....................................................................... Please print clearly, and check that you have the number correct Card Security Code .................. Valid From Date........................ (The last 3 digits on or just under the signature strip) Card Ex. Date ...................................... 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