Workhorse 1500W Bipolar Class H
Do it yourself, Class-H power amplifier 1500WRMS @ 2ohms
Its a Class-H amplifier with following features:
1: Fully complementary symmetry input differential with Cascode loading.
2: CE-CB Cascode VAS for wider bandwidth.
3: 2 Step rail switching with controlled slew for minimizing switching noise.
4: Triple EF output stage for high damping factor and ease in 2 ohms load driving.
5: All set of required basic professional protection circuitry.
6: Almost Half the heat dissipation of same wattage class-ab amplifier due to Rail Tier Switching and excellent handling of reactive loads.
Goal: To design a reliable amplifier with professional standards.
Result: All design goals met.
* Thermal shutdown
* DC Fault
* Short Circuit Protection
* True Clip Detection
* Signal out
* Fault Status
Bill of Materials
There is no BOM just yet. Will be added later.
Simulations and Analysis
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Construction (Steps / Tips / Notes)
The files for this project are available in the attachments section at the bottom of the page.
* Requires 2800VA transformer with following winding specs: 85-50-15-0-15-50-85 14A secondary.
* PCBs should be printed with minimum 35micron and PTH is must as there are vias on the board
* PCB measures 37 X 12 cm (4.75 x 14.5 in)
* Bias Pots: 10mV across emitter resistors of output devices corresponds to 30mA through each device, should be optimum
* You can use Genuine 5200/1943 upto 1.5KW or MJL21196/95 for 2KW
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Nice Try .........!!!
I am looking forward to make one.
Your guidance expected.
1.5kw bipolar amplifier pcb
it is good circuit i,ll try to make it. plz send me the part list also.
My best regards and Thanks Workhorse, this power amplifier is OK!!.
Andres from Veracruz Mexico.
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