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...
Monthly Archive: October 2019
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...
