74HCT74 simulation

Simulation for 74HCT74 (or 74HC74) results in my circuit.

Simulation Program ; LTSpice

【Daily project update】3D data for checking clearance of assembly

3D data is a good feature for checking dimension of PC-Board in term of mechanical.
After make position of PCB such as assembly part to board. Some parts need area for those bodies.
Many parts are OK to plate on board if dimensions of parts are correctly.

PCB Program; Design Spark PCB

3D Program; Solidwork with Circuitwork feature.

Eagle data convert to DesignSpark data

Many ham radio designer just make a equipment by them-self. Most favorite software for they design is Eagle PCB Design. I start an learn and use Design Spark PCB design. When I find data by other ham design, I need convert to use in my software. Design spark can open a intermediate data from Eagle format. 

I try to convert data (Data from www.qro.cz below ) . Open its, and run ULP then use template from Design spark for convert to intermediate data (*.eip for PCB, *.eis for Schematic) , Final open on Design spark and little modification (If data correctly ). That its.

# This process just you have both software in PC.  

【Daily project update】draft pcb actual side issued

Completed  a lay all components to 100x120mm. PC-Board. This side was small, components will close and track are difficult wiring. It's may clause interference between signal. Next check all components in market.

Update PCB for sdr

After revised circuit of SDR. Circuit idea from YU1LM and I improve a oscillator for using AD9850 module. Side of PCB applied for aluminum case 100 x120 mm.

And idea for Font-end may I separated box for control

73

E22ICQ