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    Help with voltage conversion

    Hi I am creating a project with the new arduino due and I need to convert the voltage output (0.55v to 2.75v) from the DAC into a range that is linear from -5v to +5v I have looked through national semi app note 31 and in the upper right corner of page 6 there is a circuit for voltage...
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    Help with a Tube EQ circuit

    Hi, I have been given a circuit diagram of a tube based EQ unit and I need some help if anyone could help me I'd be gratefull. Basically the circuit is in two parts a Tube base amplification stage and a "passive" inductor based EQ circuit that "appears to me" to be in the feedback path of the...
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    hv transformer wiring

    hi, I am building an ozone generator using a high voltage neon sign transformer and I am a little unsure of wiring. The transformer I have is brand new and runs off 230v and produces 3kv@9ma. I want to be 100% sure of how to wire this safely for obvious reason so I would appreciate your...
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    JFET Mic Pre Advise Please

    Hey, I have been slowly teaching myself audio electronics over the past few years (part time). My knowledge is somewhat lacking to say the least, so please excuse this. I am trying to design a simple twin stage JFET mic preamp with components I have laying around, I have plenty of these (100 x...
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    gating rf frequencies

    hi, i am fairly new to all this so please excuse my lack of tecnical knowledge.... I am trying to design a device to gate the output of a function generator. The generator output is sine at 2vpp ac and needs to be varied between 3 and 5Mhz. I have designed the 555 timer at the values: 1330hz...
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    ultrasonic transducer 1 - 3mhz source

    hi, i am building a project and i need to source a ultrasonic transducer that can output frequencies over a bandwitdth of 1 to 3mhz minimum without significant frequency attenuation. The only thing i can find online is research papers to Lead Zirconate Titanate Thick-Film Ultrasonic...
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