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We will despatch all orders either the same day if ordered before 1pm, generally this takes 1-2 working days via Royal Mail or Parcel Force.
In the unlikely event that the items are out of stock and not marked correctly online we will advise you of a delivery time at the earliest opportunity.
All items are despatched from JOYO Audio UK in Manchester England, these charges are selected at checkout for delivery.
We do offer Free postage but this can take a few days longer.
Special Delivery is next working day, Royal Mail and Parcel Force..
We can offer a Saturday Guaranteed delivery.
Please note that we have a cut off point of 1pm.
|Parcel Force 24 /|
Parcel Force 24 /
International Postage EU / World
Some items like the guitars we stock are collection only. We have a showroom / office / local music shop in Walkden Town Centre. Whilst we are only open Monday - Friday we are here from 9am until 6pm and have car parking for 2000 cars.. You are welcome to try anything in person and bob in to collect or just have a natter.
All of our items are despatched in plain packaging for maximum discretion. A packing slip and VAT receipted invoice is included with your order. We can also email you over a PDF, invoice for your records.
Orders sent from JOYO Audio UK can be delivered by a number of postal carriers. High value orders which have been sent to a delivery address will require a signature on delivery so please take this into account when selecting a delivery address.
Many of our carriers will make several attempts to deliver a package and should always leave a card to notify you that a delivery attempt has been made along with details of how you can contact them to rearrange delivery. We will provide you with tracking details that can be tracked online.
We use a combination of delivery couriers, in the UK we primarily use Royal Mail or Parcel Force, where we have a daily collection of orders for delivery.
Couriers for larger items posted domestic and international will be confirmed with you on ordering.
All items are subject to availability and should be displayed right on the website. We will inform you as soon as possible if the goods you have ordered are not available and we have made a mistake.
Stock is highlighted when out of stock and we are pretty good.
You are able to correct errors on your order at any point of our ordering process, either online, by email or by telephone. Dont worry we will sort it !.
We will notify you by email as soon as possible to confirm receipt of your order and email you again to confirm details.
Our acceptance of your order will take place upon despatch of the product(s) ordered. If you create an account with us on checkout you can log in and check tracking.
In the unlikely event, the despatch of your order is delayed. We will, of course, make every effort to keep you informed. Our stock levels are maintained in the UK and we work hard to keep them maintained. If an item is not in stock, it will be back in within a few days. We also rely on our couriers to do their thing.
You will only be able to exercise this right if you are able to return to us the goods you ordered unworn, undamaged, including any promotional gifts and with all original packaging as originally supplied.
Everything comes with a 12 months JOYO Audio UK warranty.
This circuit is based on the fact that a person's skin resistance changes when they sweat (sweating because they're lying). Dry skin has a resistance of about 1 million ohms, whereas the resistance of moist skin is reduced by a factor of ten or more.
The MadLab electronics range is divided into beginners kits which are suitable for people with only a little practice at soldering, medium kits which require a higher level of soldering skill for people who are more experienced, and advanced kits for expert constructors and crazy experimental musician circuit benders.
Every MadLab kit includes a professionally-manufactured printed circuit board, quality electronic components and full assembly instructions. (Think IKEA - Air fix!)
Resistors R1 and R2 form a voltage divider. They have resistances of 1 000 000 ohms (1 mega ohms) and, because their values are equal, the voltage at the upper probe wire is half the battery voltage (about 4.5 volts).
A person holding the probe wires will change the voltage at the upper probe wire depending on their skin resistance. The skin resistance is in parallel with R2 and, because it is likely to be similar to or smaller than R2, the voltage at the probe wire will fall as skin resistance falls.
Capacitor C1 functions as a smoothing capacitor and removes the 50Hz induced mains hum that is found on a person's body.
TR1 and R3 form a buffer circuit (called an emitter-follower). The voltage at the emitter of TR1 follows the voltage at the probe wire and is now able to drive transistor TR2.
Transistors TR1 and TR2 act as a voltage comparator. If the voltage at the base of TR2 is higher than at the base of TR3 then the green LED (L1) will come on. If the reverse is true then the red LED (L2) will light.
To test the Lie Detector hold the probe wires. Adjust VR1 until the green LED is just on and the red LED is just off. This is the point at which the voltage at the base of TR2 is just greater than at the base of TR3. Now use moist fingers to hold the probes. This lowers the skin resistance and causes the voltage at the base of TR2 to fall. The voltage at the base of TR3 is now greater and the red LED comes on
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