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  1. S

    Linear Voltage Regulator Design

    Hi there again Maybee the LM358 blow, its only good for 32 Volts, and you put 36 Volts on it! Hey cyw1984, cant you read? The datasheet clearly says its max voltage is 32 Volts! And Audioguru, why didn't you included some type of voltage regulation or something for the poor little IC? A zener...
  2. S

    Voltage control oscillator VCO

    :)Hehe, Pretty Good Old Man Audioguru! Hehe :) :) //Staigen
  3. S

    MIC coupling capacitor

    Hey audioguru I think it is your ISP(Internet Service Provider) that have the problem, have you talked with them, its only a phonecall away? Also, have you checked wich route the packets take from Electronics-Lab:s server to you? Much info to get there! //Staigen
  4. S

    Using Eagle Software

    Hi there gogo2520
  5. S

    Linear Voltage Regulator Design

    Hey boys, and old man Audioguru Lets stop a while and think, and dont rush away There is so much we dont know about this regulator, but there is at least some data given. We know: The input voltage is 40 Volts The output voltage: 0 to 30 Volts, depending on Vref Vref: 0 to 10 Volt from a DAC...
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    Voltage control oscillator VCO

    Hi This you will have to explain a little bit moore Also, i have done my math on the 3 caps to the right, they are somewhere around 6,622516556291390728476821192053pF
  7. S

    Voltage control oscillator VCO

    Hi
  8. S

    BENCH POWER SUPPLY

    Hi Yes, the 120 V AC from the wall is called the main voltage, not only by me, everybody call it that in circuits and schematics. Even if you have a DPST switch without a lamp it is not safe to have one of the switches to operate something that you can come in contact with. The insulation inside...
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    Linear Voltage Regulator Design

    Hi cyw1984
  10. S

    BENCH POWER SUPPLY

    Hi again Um...Me123 Of course you can, but it is not 24 Volts there, its moore, like Audioguru said :) I belive i can help you, but then you have to make two schematics, one of the transmitter and one of the receiver! I promised you a pic of whats wrong and right about mains switches earlier...
  11. S

    Jr.Member

    I belive Jr stands for Junior, you be upgraded when you come to 100 posts, i think //Staigen
  12. S

    BENCH POWER SUPPLY

    Hi again Hey boy, how do you think the lamp in the switch is powered? The lamp is powered from the switch:s both secondary terminals! Connected across them! I send up a little picture of whats right and wrong later The switch is rated for 250 V AC and the lamp is 220V AC! Never ever connect...
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    Voltage control oscillator VCO

    Hi there boys Its not that simple, there is 3 caps to the right of the coil too, they will also affect the resonance frequency! The math in itself is very simple! Lets asume for a while that the capacitance of the varicap is 20 pF. Then the math is as follow...
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    BIG EVENT IN GREECE

    Happy Birthday Mixos (Mike)!!                                    Greetings from the Swedish team!                                         Ante, Bjorn and Staigen. Thanks for putting up with us and make us comfortable at the Electronics Lab!
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    Multiple thread

    Today i gonna do something you never should do on a messageboard! I'm gonna start a "multiple thread" and i think this is an exeption from that rule. Today it is Mixalis Papadimitrious(Aka Mixos and, according to an another member of this forum, AKA Mike) birthday! So, moderators, please, dont...
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    A chock coil

    Hi Walid Thumb of rule: Not moore than 1 nF at 100 Mhz for decoupling! This goes for toobz, but i think it is relevant for transistors too, it dont have to do with if it is a transistor or a tube. What is "gesign" To Audioguru: Hehe :D //Staigen
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    capacitor?????

    Hi there Its still hard to tell if it is a electrolytic cap! Can you upload a pair of pics, taken from the ends of the cap, then maybee it's easier to tell. But, sure, it's a 20 uF 200V capacitor! //Staigen
  18. S

    A chock coil

    Oops! isn't that also too big, i belive that a cap that big at this freq lives a life of its own, and dont decouple the emitter resistor very well! Something else curious with this schematic? Of course, no emphasis! Maybee thats why the coupling cap between the mic and the input is so small...
  19. S

    A chock coil

    Hehe :D :D Isn't that a typo, should be nH instead? ??? //Staigen
  20. S

    A chock coil

    Also, isn't a 100uH choke a little bit high at 100 Mhz? //Staigen
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