Some Cyclic Timer Ideas
A product spec and need from my email archive. This indicates how clarity in customer specs can help him get a working solution with less wastage of time and money.
RS Latch Erroneously setting by Itself
I am having trouble preventing my rs latch from erroneously setting. The circuit is a voltage threshold detection circuit with a nand gate whose output is tied to a SR latch. I have capacitors...
An Oscilloscope on your TV
Over the last few days I’ve been playing around with an old small black and white tv….I did the infamous “Oscilloscope on your TV” thing that’s all over youtube and the rest of the...
Digital Multimeter 50200 50220 – Energy Concepts
This manual provides maintenance information for the Energv Concepts Digital Multimeter, Model No. 50200. Included are circuit board information, the various adjustments required, parts lists, schematic diagram, and other maintenance and troubleshooting information. Operational...
Hobby Diy Oscilloscope
Is it good as a (beginner) hobbyist to crave for an oscilloscope. mail from EA – This scope will work from your PC Audio Card or Sound Card. You First need to build the circuit below...
PC Sound Card Oscilloscope
I would like to buy a Microphone and either #1. an oscilloscope or #2. sound oscilloscope software. For hobby purposes, I would like to sample different sounds & view the various sound waves studying...
Optical switch with photo sensors
Can you help me to find circuits which uses photo-sensors.and if you do have them, would you please send them to me. Mail from TM Just a few days back i have added one....
Mains Current Indicator with a LED
This is a mains 230V AC load current indicator and is a LIVE CIRCUIT, so take care. The Resistors have to be a fusible ceramic wire wound. People learning Electricity and Magnetism or Hobby...
Microcontroller Interfacing
None of this is specific to a particular microcontroller or family of microcontrollers; it applies equally well to PICs or AVRs or 8051s or any other processor. Check the datasheet of your part to...
Dynamic Digital Tutors
Date: Wed, 30 May 2007 17:00:46 -0400 – Subject: 555 simulator Hello, I just found and had a chance to play with the 555 simulator over the internet. As I do a lot of...
Polarized Capacitors and 555
Howdy! This circuit of yours is EXACTLY what I was looking for. TOTALLY cool! However, I have a few questions about it…mostly because I’m a software guy. Astable 555 Timer Flasher. So please bear with...
Blind Temperature Controller
message: from SJ for my hobby purpose (pewter small models) i ‘m building a kind off rubber press with two hot plate about max: 200degre C. i found your website and studied the different...
