Workhorse 1500W Bipolar Class H

[table] | border="0" cellspacing="5"
|-
| Name || Workhorse 1.5KW Bipolar Class H Amp
|-
| Type || Solid State
|-
| Application || PA
|-
| Class || H
|-
| Approx Cost || Unknown
|-
|
|-
| Designer || Workhorse
|-
| Thread ||http://www.diyaudio.com/forums/solid-state/180638-diy-1-5kw-bipolar-class-h.html
|-
[/table]

[h=The Project]%1[/h]

Do it yourself, Class-H power amplifier 1500WRMS @ 2ohms

[h=Introduction]%2[/h]

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.

[h=Goals]%2[/h]

Goal: To design a reliable amplifier with professional standards.

Result: All design goals met.

[h=Specifications]%2[/h]
[table] border="0" cellpadding="2" cellspacing="0"
|-
| class="tcat" | Name
| class="tcat" | Description
|-
| Voltage Gain || 26dB
|-
| Full power Bandwidth || 20-20kHz
|-
| Power output || 1500WRMS @ 2ohms
|-
| Input Sensitivity || 4Vrms @ 8Ohms
|-
| S/N Ratio || 100dB
|-
| Peak Consumption || 4400VA @dual channel @ 2ohms continuous music operation
|-
| Idle Consumption || 110W
|-
| Harmonic Distortion || 0.05% THD [FPRL]
|-
| Load Impedance || 2 ohms minimum
|-
| Slew Rate || 33v/uS
|-
| Stability || Unconditionally stable with all known real world speaker loads
|-
| Output configurations || Parallel/Stereo/Bridge operation
|-
| Damping Factor || >1000 @ 100hz
[/table]


[h=Additional Features]%2[/h]

* Thermal shutdown
* DC Fault
* Muting
* Short Circuit Protection
* True Clip Detection
* Signal out
* Fault Status

[h=Schematic/Blueprint]%2[/h]




[h=Bill of Materials]%2[/h]

There is no BOM just yet. Will be added later.

[h=Simulations and Analysis]%2[/h]

<Embed the images for your simulations here along with descriptions for each of them so people know what you're talking about.>

[h=Construction (Steps / Tips / Notes)]%1[/h]

[h=Project Files]%2[/h]

The files for this project are available in the attachments section at the bottom of the page.

[h=Other Notes]%2[/h]

* 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

[h=Known Substitutions]%2[/h]

* You can use Genuine 5200/1943 upto 1.5KW or MJL21196/95 for 2KW


[h=Reviews]%1[/h]

No reviews yet...

[h=Build Threads]%1[/h]

Examples:

Have you built this project? If so, please add the URL to the thread that you started to show off your build.
  • URL to my uber build 1 thread
  • URL to my super dooper build 2 thread!!!

[h=Related Group Buys]%1[/h]
  • Thread 1234
  • GroupBuy:pSU
 

Attachments

  • WH1500H PCB Printable.zip
    629.6 KB · Views: 1,404
  • WH1500H PCB Gerber.zip
    527.9 KB · Views: 960
  • WH1500H Schematic.jpg
    WH1500H Schematic.jpg
    477.5 KB · Views: 2,448
  • WH1500H Schematic_thumb.jpg
    WH1500H Schematic_thumb.jpg
    110.8 KB · Views: 3,799
Last edited: