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...
Timer and Counter Modules
U1 CD4541 is a Timer with Long Duration Ability. This timer is started by a low pulse from earlier circuit, when the temperature goes above setpoint, a low state is at U2A inputs, this...
Three Opamp Differential Instrumentation
This is the best Instrumentation OpAmp, Great CMRR, ensure supply has no ripple and keep analog and digital grounds separate. Ri can be replaced with a trimpot and resistor to alter gain. Connect a...
Multi Output Instrument Power Supply
Every electronic gadget primarily needs a D.C, power supply to energize it. It also forms the basic requirement for any constructional project. consequently there is a need to obtain multiple voltage values for cost...
Using LEDs with Battery Power
What are LEDs ? How can we use them for Long Battery Life.
Drive or Fire Thyristors SCR with Pulses
message: Hi, i’m looking at building a power supply 0-35v ,0-100A adjustable cv and cc. I stumbled across your circuit drive-scr-thyristor-with-555 is there a link to describe what phase logic is required to complete the...
Differential amplifier for HV Power Supply
This is part of a precision High Voltage but Low current Power Supply for Testing leakage currents in passive devices. This Supply is a module for a Automatic Test system in component inspection.
