Archive for April, 2008
AM modulated power supply
A power supply with a modulated voltage output is required for modulation of AM transmitters final stages, Gunn diodes in gigahertz domain. This AM power supply delivers 6V to 8V in repose ( adjustable with P1 ) and between 3V and 10V when it is modulated. Frequency domain is from 200Hz to 30KHz.
Without any load [...]
Stabilized adjustable power supply 0-15V / 5A
This regulated power supply can be adjusted between a few volts and 15V with P1 and with P2 adjust the upper limit ( 15.0V ). R6 value is 0.7V / Imax where Imax is the maximum current. At Imax = 5A, R6 is 0.14Ω
T1 and T2 must have heatsinks because power losses are great at [...]
Dynamic compressor - passive components, no power supply
This dynamic compressor with passive components reduces high signal to a lower, more constant signal. If you look at this compressor schematic , you’ll notice it has no power supply, the required power is obtain thru the output signal.
If you respect the schematic values this audio compressor will output a constant 70mV when the input [...]
