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DIP Switches To The Rescue: 555 Timer Duty Cycle In this video we look at one method of keeping a consistent duty cycle while changing frequencies on an astable 555 multivibrator. In our example I've used a 50k trimmer pot to adjust the duty cycle close to 50%. So to switch between frequencies we use a DIP switch to switch between 3 discrete ceramic capacitors. A .1uF, 1uF, and 10uF. 1. Autumn Promotions links: 2. Link to the special promotion for PCBs, 3D printing, and acrylic laser cutting: 3. PCBA Automotive Services promotion link: ************************************************************************* *Please help support this channel at NO COST TO YOU. If you shop on* *Amazon, please use this link: * *I will get a small commission and it costs you nothing. * ************************************************************************* HEY YOU ABOUT TO POST SOMETHING STUPID: Yes, I know my hands are large/fat. It's because of a heart condition I suffer from called Congestive Heart Failure. Here's a link to some information about CHF: One of the symptoms is that it causes fluid retention, mostly in the hands, feet/ankles, and face.. ------------------------------------------------------------------------------------------------------------------- Support learnelectronics: Amazon Store: If you are shopping for electronic components, test gear or consumables please consider visiting my Amazon shop @ Patreon: Please check out and pledge a dollar if you can. It will go a long way to keeping the channel alive. It costs a bit of money to buy all the items and produce these videos. Your help is appreciated. Paypal: you'd like to send a one-time donation you can use this link: --------------------------------------------------------------------------------------------------------------------- Gear I use: Multimeter: OWON B33 Oscilloscope: KIPRIM DS1202 Signal generator: Junctek JDS8080 Component Tester: T7 Multifunction Soldering Station: Sealody ???????
