(function(){
let w = window.innerWidth;
function setHeaderCssVar() {
const headerEle = document.getElementById('shoplaza-section-header');
if(!headerEle){ return };
document.body.style.setProperty('--window-height', `${window.innerHeight}px`);
document.body.style.setProperty('--header-height', `${headerEle.clientHeight}px`);
const mdScorllHideEle = headerEle.querySelector('.header__mobile .header__scroll_hide');
if (mdScorllHideEle) {
document.body.style.setProperty('--header-scroll-hide-height-md', `${mdScorllHideEle.clientHeight}px`);
}
const pcScorllHideEle = headerEle.querySelector('.header__desktop .header__scroll_hide');
if (pcScorllHideEle) {
document.body.style.setProperty('--header-scroll-hide-height-pc', `${pcScorllHideEle.clientHeight}px`);
}
}
function handlResize() {
if(w == window.innerWidth){return};
w = window.innerWidth;
setHeaderCssVar();
};
function init(){
setHeaderCssVar();
window.removeEventListener('resize', window._theme_header_listener)
window._theme_header_listener = handlResize;
window.addEventListener('resize', window._theme_header_listener);
}
init();
})();
${data.index + 1}/6
Description
Three Terminal Voltage Regulator Power Supply 12V Voltage Regulator Circuit Rectifier Filter LM7812 Voltage Regulator
Product Description
L7812 12V voltage regulator module integrates rectification, filter components and voltage regulator chip, input AC or DC voltage within a certain range, can regulate the output DC9V voltage, and has overheat and overcurrent protection.
Specification
item
value
Input terminal
15-24V DC or AC
Size
49*26mm
Installation Instructions
The input terminal is connected to 15-24V DC or AC voltage, and does not distinguish between positive and negative. VCC and GND are 9V voltage output terminals, which are connected to the load.