pwm photos on Flickr

Departmental shunter PWM 651 at Radyr on 31 December 1977. This was scanned from a damaged 35mm negative - I've done my best to "improve" the image with software, but don't enlarge the image or you'll clearly see the flaws!

PWM 651 was delivered new to the Western Region of BR from Ruston and Hornsby in 1959, and spent almost all of its BR career based at Radyr, and then Canton. It was withdrawn in October 1998, and then preserved, initially, at Pitsford and Brampton. It was ironic that 97651 was preserved at Pitsford, as this is the nearest preservation site to my house (about a 45 minute walk), whereas I had seen a lot of PWM 651 as a spotter in the 60s in Cardiff. It was always (or so it seemed) at Radyr during the week, but at weekends could be seen almost anywhere in South Wales attending engineering works,

97651 moved from Pitsford to the Strathspey Railway in 2008, but, since August 2015, has been based on the Swindon and Cricklade Railway.

PWM Oldtimertreffen by Knirsch Knarz (Flo)

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Theresienwiese München

NCP30xx: PWM Controllers by ON Semiconductor

ON Semiconductor today introduced three new flexible synchronous pulse width modulation (PWM) controller devices – the NCP3020A, NCP3020B and NCP3011. Offering a wide input voltage range, from 4.7V to 28V, these devices enable the flexibility to be used with a variety of input sources in consumer electronic equipment such as set-top-boxes and LCD televisions, as well as industrial and computing applications including printers, scanners and telecom systems.

Read the press release at ON Semiconductor.

20230606_FT_IWM-4319 by Financial Times Live

PWM Innovation in Wealth Management Summit, 8 June 2023, London

20230606_FT_IWM-4404 by Financial Times Live

PWM Innovation in Wealth Management Summit, 8 June 2023, London

PWM_3648 by Peter Mackenzie

20230606_FT_IWM-4474 by Financial Times Live

PWM Innovation in Wealth Management Summit, 8 June 2023, London

20230606_FT_IWM-9313 by Financial Times Live

PWM Innovation in Wealth Management Summit, 8 June 2023, London

20230606_FT_IWM-4456 by Financial Times Live

PWM Innovation in Wealth Management Summit, 8 June 2023, London

20230606_FT_WealthTechAwards-9627 by Financial Times Live

PWM Wealth Tech Awards, 8 June 2023, London

PWM Shunter 97654 Peak Rail by Neil Sutton

BR Paxman Departmental PWM Shunter in yellow livery numbered 97654 stands at the Heritage Railway Trust at Peak Rail. This locomotive was working a short brakevan shuttle.

Street & Co. by Rich Brooks

Laser PWM by HackRVA Makerspace

PWM_3694 by Peter Mackenzie

LED with prototype control circuit by Brian Mayton

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Here's one of the RGB LEDs with a simple prototype control circuit. The circuit is connected via USB to a computer (final version will use ZigBee wireless.) A small python script is running on the control computer to send a sequence of colors. The interpolation between colors is done in the hardware.

It's going to look neat when I finish up the circuit design and get a few more of these on top of my cabinets.

20230606_FT_IWM-4371 by Financial Times Live