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Thanks for your swift reply Alec_t, what I want to do is generate 400 Hertz at 115 v to drive an old Analog frequency meter at about 7 Watts and then the circuit may be used for parts ...Thanks again for your Similar threads..colum
Thanks for your very good advice AnalogKid, I wonder about name "AnalogKid" if you need some analog meters I have some for free (just postage) columYour schematic is fine as far as it goes.
1. It needs decoupling capacitors on both power pins. A minimum is a 0.1 uF ceramic capacitor from pin 4 and pin 7 to ground. Keep the leads as short as possible. Better is to add a 10 uF electrolytic cap in parallel with each 0.1 uF ceramic.
2. There is no ground reference shown for the input signal. Without it, the output will not be centered about ground. If the input signal is AC coupled through a series capacitor, add a 100 K resistor from pin 3 to ground as a start.
ak
I was going to use the 741 just to buffer the signal from a Signal generator into Transistors into a reversed Transformer, the only load on the 741 is the Hertz signal ... The load will be on the - + power supply and the Transistors...Thanks...columwell you are not going to use an op-amp for that, you will kill it
explain you idea much more clearly
I was going to use the 741 just to buffer the signal from a Signal generator into Transistors into a reversed Transformer, the only load on the 741 is the Hertz signal ... The load will be on the - + power supply and the Transistors...Thanks...colum
These are called Vibration Meters also called Tuned Reed meters, I will send a pictureCan you post a link to this frequency meter? I'm surprised it needs a 115V input and 7W.
Not sure what you mean by power level but it draws about 7 Watts at 115 V and is just meter not a relaystill really unclear
what voltage and power level is the 400 Hz ?
Not sure what you mean by power level but it draws about 7 Watts at 115 V and is just meter not a relay
If the meter is anything like this one, it covers a frequency range of less than one octave. Does yours? If so, it would probably respond unambiguously to a square-wave input. A square-wave at high voltage would be much simpler/cheaper to generate than a sine-wave.
Well Davenn I do appreciate your attention in all of this but I would like to know what you meant with "Voltage and Power level" I worked on very high Voltage 120 t0 480 Volts unlimited Amps but I'm not too familiar with Electronic jargon. I can send pics of all of these antique meters if you are interested...Jeff