Lighting a LED String – Serial Drive
Hi there, my name is steve. I would like to ask you about the best way or the most efficient way to supply LEDs. there are 36 small LEDs or 72 small LEDs (5mm)....
Electrometer, Gauss Meter and EMF Meter
Hey folks, I’m brand new here and to tinkering with electronics in general. I’m looking into building my own electroscope. My question is: What’s the difference between a static field and an EMF field?...
Voltage Attenuator Amp – DMM Project
LF356 opamp FET input is in a inverting amplifier configuration here. R4 + R5 make up Ri each 1/4 W MFR withstands 250V so both will take upto 500V. Use more in series for...
Thermocouple and Current Input Module
This input module converts J, K Thermocouple and 4-20 mA Inputs to 0-2V Full Scale. These can be used for any voltage/current inputs too. The RTD module can be modified more easily for Voltage...
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...
Flashing Neon lamp for Soldering iron
message: How can I make a flashing neon lamp – 240 volt AC I have been trying for 3 hours ( R-C circuits) but no success. I want to include it in my soldering...
Leakage of SSR driving AC Solenoid
message: I have a 115vac ssr powering a solenoid only pulling a 160ma. upon activation 115vac is applied, but upon deactivation 78vac is still present. I’m told I need a bleeder resistor, but no...
Battery Level Indicator
Do you have a battery level indicator for a 24V Ni-Mh recharegeable battery source ? Prefer the display as a LED or LCD traveling bar graph. Mail from EY have a look at BVM1...
