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after 741 opamp ,pl put a 555 timer in the bistable mode so that the unit can be reset with cancel button..
at point of interference ,you get the bistable into set stage and buzzer keeps ON till you hit the reset.
be careful Re:: current drains as drawing more than 25mA renders you as line fault and liable to be cutoff.
Use a flyback converter in the isolation mode and get an opto to control your PWM stabilization.
Input stage needs to use a bridge and a series resistance with relay contacts to open as...
Need wizards inputs for double pye filters design of >100MHz suppression to 63dB levels for getting MIL 461 D/E standards.
Same needs to withstand CE 102 ,,115 ,116 and RE 102 ..
Power levels are 1000Watts
In snubbers circuits ,this is for the surge /charge power dissipation ,for current measurements it is acting as shunt for hi sensitivity DAM, in SMPS it is current sense limit stabilization,in class A amplifiers ,it is for matching the complementary stage Hfe,and in filters ,it can be for burst...
Put a small feedback capacitor of 1kpf from output terminal to inverting input to quench the noise .
As it is ,a common ground between the supplies must be connected to load ground requirement.
In a DPM you get the peak readings of the phase controlled rectifier .
You actually need to get average value to read... Can you put a bleeder resistor ?
I need to convert a 0-1VDC signal into an RS232/RS485 data for distance commn . thru wires ...
Can I get a simple circuit for this conversion....In case you can design an SNMP for ethernet from a linear 0-1VDC ,,I require that help too.
I had tried the simple LM317 version which works OK for A single LED ...However , when the temperature increased from 20-75*C there were deviations in intensity and I was unhappy at the result .
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I had to work on 18watt LEDs and had to parallel 15 nos spread to a distance of...
Just finished design of one unit with 300mAmps load current.. I had raised the temp. from 25*C to 70*C in the soak testing for 8hours continuous and stable function.
If you need 12VDC from a 120VDC ,why use the transformer ??Use a three pin 12V DC regulator/or a 12V zener reference instead with a series regulator like a 2N 3055 /better ...What is the current ratings of the 12VDC required by you .??
Need to have some understanding and help in assembly of passive PFC for a PWM SMPS 300watts design using current mode UC 3842 giving 24VC /14Amps ..
My frequency of operation is 62KHz. ...
Active mode PFC give interference dips in range 125VAC to 165VAC resulting in 350VDC falling down to...
It is your luck that the string is current regulating in itself .However , be vary since unbalance in currents /voltage drops across each will tend to fuse one and have the compensation provided by the other .
In any case is is advisable to have a mosfet regulator for each LED with 350mA...
The power current needed is 24V/80amps for 2000watts power .
.A full wave bridge can be designed using sets of four Mosfets with transformer primary driven by the bridge and having a rating of 100amps .
The loss in the switching needs to be less than 5% of this and such data means raings of...
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