and possibly a circuit schematic recommendation.
A disclaimer here. I am not an EE major, though I have dabbled in electrical and electronic compositions. By no means am I an expert, nor am I ready to advance to microcontrollers due to the expense of the investment in time and decent equipment cost. Also I am a Mac user, and most microcontroller H/W I've seen advertised usually interfaces with PC's either as an option or as the main programming interface. I'll leave the microcontroller battle for another day.
For now, I wish to assemble a function generator, possibly from transistors and associated RLC components. I have seen Wein bridge circuit schematics, and understand their appeal for sine wave accuracy and good stability, so I am leaning towards that type. However, I don't know which designs are best or elegant in their simplicity. More importantly, none of the schematics I have seen provide the maximum frequency output. Of course, I'm aware that RLC component values affect this, but also the type of transistors or IC's (or tubes, even) limit the the top frequency, or at least the quality of the waveform. Furthermore, I am clueless as to the secret of said transistor/IC/ tube correlation to the top frequency. As stated in the subject line, The max I would like to achieve is 2Mhz, though it doesn't matter if it goes higher. I would like to be able to vary the output frequency with a rotary knob or two or three or four, etc., and switch(es) depending on if I need to stage the frequency bands, starting as low as I can. One hertz, maybe? Output voltage is not critical, about 1 and 1/2 to 3 volts is adequate. Amperage can be trivial. Although sine wave generation is important, I would also like to generate square waves. This could possibly be some components the sine wave feeds into. Triangle and sawtooth would be icing on the cake, but not required at this point.
Any takers?
Thanks in advance,
Mark
A disclaimer here. I am not an EE major, though I have dabbled in electrical and electronic compositions. By no means am I an expert, nor am I ready to advance to microcontrollers due to the expense of the investment in time and decent equipment cost. Also I am a Mac user, and most microcontroller H/W I've seen advertised usually interfaces with PC's either as an option or as the main programming interface. I'll leave the microcontroller battle for another day.
For now, I wish to assemble a function generator, possibly from transistors and associated RLC components. I have seen Wein bridge circuit schematics, and understand their appeal for sine wave accuracy and good stability, so I am leaning towards that type. However, I don't know which designs are best or elegant in their simplicity. More importantly, none of the schematics I have seen provide the maximum frequency output. Of course, I'm aware that RLC component values affect this, but also the type of transistors or IC's (or tubes, even) limit the the top frequency, or at least the quality of the waveform. Furthermore, I am clueless as to the secret of said transistor/IC/ tube correlation to the top frequency. As stated in the subject line, The max I would like to achieve is 2Mhz, though it doesn't matter if it goes higher. I would like to be able to vary the output frequency with a rotary knob or two or three or four, etc., and switch(es) depending on if I need to stage the frequency bands, starting as low as I can. One hertz, maybe? Output voltage is not critical, about 1 and 1/2 to 3 volts is adequate. Amperage can be trivial. Although sine wave generation is important, I would also like to generate square waves. This could possibly be some components the sine wave feeds into. Triangle and sawtooth would be icing on the cake, but not required at this point.
Any takers?
Thanks in advance,
Mark