In this post I have explained how to modify an existing button start system in motorcycles so that it’s disabled as soon as the engine has started and gained the required minimum amount of RPM. The idea was requested by Mr. Jordan Circuit Requirements I just discovered your splendid site/blog with focus on education about […]
Newly Updated Circuit Projects:
Using Single Switch for Fog lamp and DRL Lamp
In this post I have explained an easy method of upgrading your existing car fog lamp switch such that it allows toggling both the fog lamp as well as the DRL lamps alternately, as per the owner’s requirement. The idea was requested by mk karthick. Circuit Objectives Am looking for a circuit which is directly connected […]
Automotive LED Driver Circuits – Design Analysis
In cars or automobiles, LEDs have grown to be the preferred choice of lighting. Whether it’s the rear tail-lights or the tell-tale indicators in the cluster as indicated in Figure 1 below, all incorporate LEDs nowadays. Their compact dimensions helps versatility in design and offers the prospective to be as durable as the vehicle’s life […]
4 Solid-State Car Alternator Regulator Circuits Explored
The 4 simple car voltage current regulator circuits I have explained below is created as a immediate alternative to any standard regulator and, although developed principally for a dynamo it will function equally effectively with an alternator. If the functioning of a traditional car alternator voltage regulator is analyzed, we find it amazing that these […]
Automobile Engine RPM Servicing Meter Circuit (Analogue Tachometer Circuits)
These useful lightweight, cheap, analogue tachometer circuits are developed for facilitating car or auto servicing mechanics for precisely adjusting a car ignition system RPM to get maximum efficiency from it. The proposed circuits are actually combined results of a tachometer and a dwell meter. Application The car RPM servicing meter circuit can be applied for […]
3-Pin Solid-State Car Turn Indicator Flasher Circuit – Transistorized
Although, most of the car electronics have evolved into solid-sate versions, a turn indicator flasher unit is one device which still depend on a relay based design in many of the modern cars. Disadvantages of Relay Based Flasher There are a couple major disadvantages of a relay based electromechanical flasher unit: 1) First, these being […]




