This simple timer oscillator circuit can be used for automatically switching an exhaust fan ON/OFF as per a fixed predetermined period. The circuit was requested by Mr. Anshuman. Technical Specifications Here is a suggestion for the circuits on your blog. The idea is to have a very simple Oscillating circuit will delays of 5-10 minutes to […]
Timer and Delay Relay
Single Mosfet Timer Circuit
The following article discusses the use of a mosfet as a switch for toggling high current loads efficiently. The circuit can be also transformed into a delay OFF circuit with simple modifications. The design was requested by Mr.Roderel Masibay. Comparing Mosfet with BJT A field effect transistor or mosfet can be compared with a bjt […]
Thermostat Delay Relay Timer Circuit
The circuit given below describes a time delay relay system which is used for keeping a hot air blower working under a specifically programmed timing sequence. The idea was requested by Mr. Doug Shadix, I have explained more: Technical Specifications Hi Swagatam,Looks like you know your stuff when it comes to these timer circuits, this one […]
Automatic Door Lamp Timer Circuit
In this article I have explained a simple automatic door light timer circuit which activates every time the door is opened, and switches OFF after a predetermined time if the door is kept open for too long. The circuit was requested by one of the avid readers of this blog, Mr. Juan. I have explained more. Technical Specifications: I always find […]
Digital Clock Synchronized Programmable Timer Circuit
I have already discussed one programmable timer circuit in this blog earlier, the circuit involves the IC 4060 for generating the basic oscillations which is further used for generating the required time intervals, however this cannot be synchronized with an external clock. The following circuit was requested by Mr.Amit, here the concept makes use of a clock for acquiring the required base timing […]
Simple Delay Timer Circuits Explained
In this post I have explained the making of simple delay timers using very ordinary components like transistors, capacitors and diodes. All these circuits will produce delay ON or delay OFF time intervals at the output for a predetermined period, from a few seconds to many minutes. All the designs are fully adjustable. Importance of […]
