Electronic Projects

The introduction of this article should introduce an interesting construction of a relatively simple and quality NF amplifier, the second part describes the circuit solution and the principle of this amplifier's function. The following section is dedicated...

The aim of the this programmer was principally to program the PIC 12F629. But as the PIC 12F675, PIC16F630 and PIC16F676 have same electrical and logical programming interface, I have extented the compatibility to these 3 PIC models.
Their are many PIC 12F629 very simple programmer but all required a separate power supply. The smarter ones are taking it from the PC through a USB connector. Though I wanted to get rid of this second connector to make the easiest programmer for the...

A useful timing strobe can be constructed using high-brightness LEDs and a few common components. Ignition pulses from the number 1 cylinder high-tension lead are used to trigger the circuit via a home-made inductive pickup.
Transistors Q1 & Q2 buffer and amplify the pulses from the pickup, which then drive the inputs of three Schmitt-trigger inverters (IC1a, IC1c & IC1f). Each positive pulse at the inverter inputs causes a low pulse at their outputs, forward-biasing...

Here is a simple 12 V inverter for using a small soldering iron (25W, 35W, etc) in the absence of mains supply. It uses eight transistors and a few resistors and capacitors. Transistors T1 and T2 (each BC547) form an astable multivibrator that produces...