Vacuum Tubes Valves
Musical & effects
Yagi Uda Antennas
Metal Detector Circuits
Liquid Sensing Circuits
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Air-Gas Detection Circuits
Human Sensing Circuits
RF & Radiation
Optical Sensing Circuits
Free Energy Circuits
AC to DC & DC to DC
Solar Cell Circuits
Micro Power Circuits
Switching Power Supplies
Light Laser LED
Digital to Analog
Analog to Digital
Data Bus Circuits
Voltage to Pulse
Current to Voltage
Frequency to Voltage
RF Converter Circuits
Sine to Square Wave
Voltage to Current
voltage to frequency
Period to Voltage
Video Wall circuits
TV Video Circuits
Motor Control Circuits
8051 / 8052
PCB CAD Software
Car bike Circuits
555 Timer Circuits
Remote Control Toy
H Bridge Circuit
DIY HV Variable Cap
DIY PMA alternator
Interconnection & Timing
Digital Signal Integrity
Digital & Bipolars
Sensors & Detectors
Regulated Power Supply
4 Band Resistor
5 Band resistor
6 Band resistor
Lantern making use of a relay control circuit
220V mains electricity sent through 0.33 u F (Ci). ] 50kn ohmic drop Sui, Di - D4 bridge circuit composed of rectifier. After 100 u F capacitor filter technology,: [born about
Light control relay control lamp
220V AC by the step-down transformer T, a diode VDI-VD4 bridge rectifier and filter capacitor CI, output of about 12V DC voltage for the entire circuit use. Light control circu
Using voice switch circuit relay lighting
It uses a relay control. The voice switch is characterized by: when the first clap, then through the load (lights); when the second clap, cut off the
Relay control auto transformer one AC power supply circuit
When the input voltage is 170-260V AC range, the output AC voltage 187-231V range. Transformer ratio is k = 24/220 = 0.11.
JB-22 transistor relay circuit
When the input is disconnected, the transistor VTi conduction, VTz cutoff relay KA released. When the input is shorted. VTi deadline, VTz conduction, KA pull.
Relay protection circuit
Operating power protection devices, there is a DC power supply operating power and AC operation into two categories.
Circuit diagram of brightness control relay
Shown for the brightness control relay circuit. Resistors R1, R2 and R3 form a light-sensitive resistor voltage divider circuit,
Transistor time relay circuit
Five of the transistor time relay circuit b (a) for the exchange of time relay, Figure (b) is a linear flow of time following, the use of only two different power supply,
Multifunction adjustable universal time relay (NE555, CD4013) circuit
The multifunction circuit mainly refers to it can be "delayed pull", "time release", "delayed cycle" conversion three operating modes.
Relay control circuit
Motor winding is delta transposition capacitance cl -C -3G DC Lan speed generator and three-phase asynchronous motor coaxial cs mechanically connected by a field winding powered disabilities 10V.
Three Relays AC arc welding machine circuit
Relays AC arc welding machine load since the three-way power circuit shown in Figure 522 relay KA selection type, 24V; time relay KT selection JS7 Ying, 0.4-180s.
JG series circuit of a photoelectric relay
JG series of photoelectric relay circuit. For the circuit to work reliably, we have adopted the Schmitt trigger circuit. These circuits are similar, when there is light incident on the photosensitive member, the internal resistance becomes smaller, the transistor VT. Turn, relay KA box together.
Relay control auto-transformer AC power supply circuit
It uses two LM358 op amp A2 and Ar as an upper limit and a lower limit voltage electrical voltage measurement comparison control circuit. RPi adjustment potentiometer and RP2, can change the upper limit voltage and lower voltage setting.
One circuit thermistor relay contacts to prevent competition
Competition is ~ relay contacts contactor control systems often encounter problems, too much trouble to deal with, and sometimes need to add a lot of elements to add. However, if the use of negative temperature coefficient thermistor (NTC) delay switching
Three single junction transistor time relay circuits
Three single-junction transistor time relay circuits It uses pulse charging circuit, and therefore can be done for a long time delay, maximum up to tens of minutes. FIG unijunctions VTi and other groups into the first stage delay circuit, charging the
A relay control circuit
A relay control circuit It shows the relay control circuit. There are many in the microwave switches, such as the power supply switch is turned on can be achieved, switch off p
Electronics - circuit relay type answer
A relay-style five electronic Responder Responder group circuit. The circuit has a self-locking, sound and light display, monitor time and other functions. Large ones may be in
Infrared remote control relay circuit b
A transmitting circuit, power, infrared light-emitting diode emits light receiving circuit shown in Figure, receives infrared light transistor 3DU5, the received signal output
Single-button control off of the relay circuit 2
After the turn-off circuit is first applied to the next KA KA, intermediate interval required less than Is, this is because when the time is up to 3 times the charge time const
Light control relay circuit
As a photoelectric switch with photoresistor circuit, the sensitivity is very high, as shown for the light control relay. At low illumination, VT nonconductive; when there is l
Relay type starting circuit diagram
As shown below, the following figure is the use of a relay or the like of the starting circuit. Power input access resistance R, R role there are two, one: to prevent boot when
No inductive analog relay circuit
As shown in FIG relay is non-inductive analog circuit theory. working principle: 220V power supply via a load RL, R1, D1 ~ D4, ZD1, as Q4, Q3 in turn provide positive and negat
Op amp circuit diagram relay delay release
As shown in FIG relay the delayed release operational amplifier circuit. When the power switch, the inverting input terminal of the operational amplifier is added resistor 4.7k
Length 1 minute delay relay pull transistor circuit diagram
As shown is composed of a transistor relay delay pull circuit. Just power, 16 F capacitor voltage is zero, two transistors are off, the relay does not operate. With 16 F capaci
Pull transistor relay delay circuit diagrams
As shown relay delay pull transistor circuit. Just power, 16 F capacitor voltage is zero, two transistors are off, the relay does not operate. With 16 F capacitor charge, over
Voice relay circuit
As shown, the circuit by the sound detection circuit and the monostable trigger circuit, the actuator for the relay. VT1 complete input audio signal amplification, when the sig
Telephone relay circuit
By cross-connect telephone ringing circuit, when the phone rang, the circuit closes the relay. It uses the delay in contact, thus to drive any bells, sirens, buzzers or lights.
Charging time relay circuit 2
Charging time relay circuit 2 It is a long delay circuit. When the capacitor C is 5000yF, the delay can be up to 1. 3h. By transistors VTi and regulator VS2, VS3 group as a con
JS20 single-junction transistor time relay circuit
Circuit by the delay loop, discriminators, output circuits, power and lights of five parts. Part of the power regulator by resistance R, and the regulator vs constituted power
Solid state relay circuit controls the motor-way operation
Circuit shown in Figure 3-13. Figure, RC surge absorption circuit is, R, zinc oxide varistors (such as MY31 type, MYH12 type, MYH20 type, etc.), an overvoltage protection devic
Time relay three-start circuit
Circuit shown in Figure 3-159. The circuit uses complement each other three times and three relay contacts, followed by the automatic removal of the rotor circuit resistance le
Three-start circuit current relay
Circuit shown in Figure 3-161. Figure, the first stage starting current detection by the current relay KIi Ri in series with the second stage starting current relay KI2 detecte
Stepper Motor Circuits
Remote Control Circuits
Direction Finder Circuits
Power Control Circuits
Motor Control Circuits
Ultrasonic distance finder circuit
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is measured. There are three main categories of distance measurement methods in use: a) By...
Simple Metal detector circuit with CD4030
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to find something potentially valuable, hidden a few centimeters below the soil. So many...
Fully automatic watering circuit for flower pots
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This circuit comes as a solution to this problem. Depending on humidity of the pot at...
Simple deep searching metal detector circuit
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the circuit of this metal detector, it is possible to detect a metal coin in depth of 90 to...
Sub-Harmonic Bass Converter for Electric Guitars
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound, such as filtering or distortion. Instead, a frequency division system produces outputs...
Echo Depth Sounding Sonar for Boats
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the calibration of the rope. This arrangement still exists in some yachts. The big...
100W HiFi Audio Amplifier Circuit
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power supply must be symmetrical so that no electrolytic capacitors are needed at the outlet....
Plant-Pot Water Level Indicator Circuit
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower. The circuit of the device is shown in Figure 2. The water detection is made from the bottom...
Analogue Sound Preasure dB-Meter Circuit
The best human ear can capture sounds from 20Hz to 20KHz. These limits are known to be the broadest that can exist. Normally the normal limits range from 100Hz to about 13KHz and depend on the age and health of the individual. We for our measurements and to have a good accuracy we will get the limits of 20Hz to 20KHz. A sound to be heard does...
DIY HV Variable Capacitor
DIY PMA Alternator Plans
Digital Signal Integrity