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the ad9850 modules available cheaply will do the job
the phase output can be programmed in 11.25 deg. steps.
you will need 2 modules. you can get 2 sine wave output from
each module but they are 180 deg out of phase.
you will have to drive the modules from the same clock source.
if one module is...
well i so-pose i will have to go think again
but resistor/cap phase change = 90 deg,
coil to base = > 90 deg. one doe's not need
lots of RF feed back, just a bit to boost Q and
sensitivity, the capacitor together with the
connecting wires will have inductance so it will
not completely remove the...
well now thinking about it i can now see where
the rf is feed back, i think its via the ratio of
the diode capacitance to the RF decoupling capacitor connected to GND
controlled by the feed back resistor and the cap value.
its a simple circuit and it seems to work first time
ha now that the...
just a suggestion
to grantee that your information frequency will get through your
channel of communication the basic rule is that the channel band width
should be at least twice the information frequency.
so the bandwidth of your amp should be >24Mhz
the result if the band width requirements...
just a suggestion,
the use SMA/SMB is all to be about screening,insertion loss of the connector,size of the connector, impedance of the connector
availability of the connector,ease of termination, (no special tools required to make off)
miniature RF cables are availability for these connectors...
just a thought,
1/10 track pitch =(1000V brake down in air).
so if you got 300V 1/20, would be ok, but i would use 1/10 pitch or even 2/10. ie. leave redundant pins between rails
just a suggestion.
the magneton use >2.5KV @ >400Ma in a microwave its lethal so
don't mess with it if you don't know what you are doing.
the anode of the magnetron is connected to the case and it is +ve.
the cathode is isolated and the magnetron is like a thermionic tube it has
an heater to...
just an observation
ho,no not another one.......how many have you built
now? interesting.
RF feed back is via the ratio of the diode capacitance
the cap connected to the input coil and the coin will
also give out of phase feed back.
just to say
in the circuit only the AF is feed back if it went around again it
wold echo or oscillate at audio frequencies.
the reason it won't go round a gain is because at audio
frequency the 100 k resistor is the load and the choke is
a low value resistor, so no audio voltage is developed...
just a suggestion
rod normally refers to a ferrite rod antenna.
i take it you mean a telescopic antenna ,
rod antennas = ground plain antenna = 1/4 wave, 1/2 wave, 3/4 wave or 1/8, 1/16, 1/32 ect
for best results they are cut or pulled to the required frequency band or needs.
an maybe coil or...
just a question
do you need isolation between input supply and the outputs?
looks like you want a 300W SMP (bit of de-rating added)
if yo do then its a offline reg chip, or a offline reg controller,
input filters, bridge reg, high voltage smoothing cap, FET TR switch
isolating transformer...
just a suggestion
its the condensation that is a problem and mole growth.
but components can be stored ok if they are vacuum packed.
or otherwise stored with silica jell packs.
Re: AC to DC Converter 35V @5A
just a question
have you got a transformer? is it 35V@5A, 200VA transformer.
torrid?. it be ok.
you just need bridge rectifier, smoothing capacitor, 723 regulator
driver transistor (TIPxxx), series pass transistor (5 off 2n3055 in parallel)
with 0.22R current...
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