| This circuit was designed to ‘baby-sit’ SLA (sealed lead-acid or ‘gel’) batteries using freely available solar power. SLA batteries suffer f...
| This circuit was designed to ‘baby-sit’ SLA (sealed lead-acid or ‘gel’) batteries using freely available solar power. SLA batteries suffer f...
| The circuit shown here combines the functions of a low-pass filter and an integrator, presenting a novel approach to creating a precision 50...
| Power shortage problems arise when too many USB devices connected to PC are working simultaneously. All USB devices, such as scanners, modem...
| This circuit eventually surfaced while pondering over the design of a current indicator for a small power supply. Fortunately, it proved pos...
| At the end of his scientific research carried out in 1887/1888 Heinrich Hertz was able to prove the existence of electromagnetic waves and d...
| Switched mode power supply units (SMPSUs) are popular but difficult to build oneself as well problematic when it comes to understanding thei...
| This circuit was designed to protect a computer monitor from overheating. It is recommended to attach this circuit to power users’ monitors!...
| Physicians and repair engineers often use small light pens for visual examination purposes. Rugged and expensive as these pens may be, their...
| It is often necessary in complex designs to provide a sequence of reset pulses to different parts of a circuit to ensure the whole design fu...
| This circuit was designed to produce an audible alarm when the mains power is interrupted. Such an alarm is essential for anyone whose livel...