Ton Giesberts (353)

| Standard logic ICs such as the 4017, a 5-stage divide-by-10 counter, can be used in many applications instead of microcontrollers — for exam...

| Some clocks use the frequency of the mains voltage to keep accurate time. But what if a design is intended for a 50-Hz mains and doesn't...

| The WS2812D-F8 is a high-tech, digitally programmable 8 mm RGB LED that’s individually addressable in daisy chains of up to 255 devices. In...

| Most birds have not yet learned to communicate with us. The electronic Funny Bird bird takes a step in the right direction: When you whistle...

| For those who frown upon any shape or form of switched-mode power supply (SMPS) for the high-end Fortissimo-100 Power Amplifier, this projec...

| Back in 1984, Elektor published the “One-Armed Bandit” project. Here we enhance it and honor the design with a PCB and a handy kit.

| Need an alternative to a switched-mode power supply? This project yields a 500+ VA, linear, symmetrical voltage regulator marked by low drop...

| Getting older often means hearing high frequencies less good. The intent of this circuit is to compensate for this by using a steeper correc...

| Digital amplifier modules can now be bought for little money, but high-end enthusiasts typically turn up their noses at the sound. On the ot...

| Most induction meters are suitable for small coils, but do not measure with high currents. With this circuit, a high-current benchtop power...