Recent Posts

GDO circuits bonanza !

The Gate Dip Oscillator (GDO) is one of the most useful tools for the radio amateur. You can use it to tune LC circuits, as test RF source, check antennas, etc. This GDO circuits bonanza features many previously unpublished GDO circuits from (primarily) Dutch magazines and books.

Bouwen en luisteren – IAN R. SINCLAIR

This […]

Test probes with super fine tip

These test probes wereld made several years ago and have proven to be very useful in many applications. The small tip allows you to probe even the tiniest SMT components. Because the tip is really, really sharp (don’t ask me how I know… ouch) it allows you to breach residue of solder flux or even […]

SMT DIP adapter PCB from TI

PA3COR TI SMT DIP adapter EVM

If you like prototyping but find it’s a nuisance to mess around with small, all too common, SMT packages, the Texas Instruments SMT DIP adapter kit might be something for you.

The DIP adapter kit supports six of the most popular industry-standard packages, including:

D and U (SOIC-8) PW (TSSOP-8) DGK (MSOP-8, VSSOP-8) DBV […]

Do-it-yourself SMT prototyping board

Frequently, I need to do some SMT prototyping. Partly because some components are only available in an SMT enclosure (like the MCP4725, a nice small 12 bits DAC), partly because it needs to be small and sometimes it is Saturday 5 past 5 and the only type of a critical part available is SMT. […]

HP-456A Current probe – repair

This HP-456A current probe is a real beauty. Released as a new product by the Hewlett-Packard Company in 1960, the 456A was HP’s first solid-state, stand-alone, clip-on current probe. Its elegantly designed amplifier uses two— then “state-of-the art”—PNP germanium transistors. The Original Probe In 1960, The Hewlett-Packard Journal (July-August, Vol. 11) proudly announced: “This new […]